20815731200

素因数分解:

$2^9\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:340

約数の個数: 480

約数和(自身を含む): 61376071680

約数和(自身を除く): 40560340480

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 25, 31, 32, 38, 40, 44, 50, 55, 62, 64, 76, 80, 88, 95, 100, 110, 124, 128, 152, 155, 160, 176, 190, 200, 209, 220, 248, 251, 256, 275, 304, 310, 320, 341, 352, 380, 400, 418, 440, 475, 496, 502, 512, 550, 589, 608, 620, 640, 682, 704, 760, 775, 800, 836, 880, 950, 992, 1004, 1045, 1100, 1178, 1216, 1240, 1255, 1280, 1364, 1408, 1520, 1550, 1600, 1672, 1705, 1760, 1900, 1984, 2008, 2090, 2200, 2356, 2432, 2480, 2510, 2560, 2728, 2761, 2816, 2945, 3040, 3100, 3200, 3344, 3410, 3520, 3800, 3968, 4016, 4180, 4400, 4712, 4769, 4864, 4960, 5020, 5225, 5456, 5522, 5632, 5890, 6080, 6200, 6275, 6400, 6479, 6688, 6820, 7040, 7600, 7781, 7936, 8032, 8360, 8525, 8800, 9424, 9538, 9728, 9920, 10040, 10450, 10912, 11044, 11780, 12160, 12400, 12550, 12800, 12958, 13376, 13640, 13805, 14080, 14725, 15200, 15562, 15872, 16064, 16720, 17050, 17600, 18848, 19076, 19840, 20080, 20900, 21824, 22088, 23560, 23845, 24320, 24800, 25100, 25916, 26752, 27280, 27610, 28160, 29450, 30400, 31124, 32128, 32395, 33440, 34100, 35200, 37696, 38152, 38905, 39680, 40160, 41800, 43648, 44176, 47120, 47690, 48640, 49600, 50200, 51832, 52459, 53504, 54560, 55220, 58900, 60800, 62248, 64256, 64790, 66880, 68200, 69025, 70400, 75392, 76304, 77810, 79360, 80320, 83600, 85591, 87296, 88352, 94240, 95380, 99200, 100400, 103664, 104918, 107008, 109120, 110440, 117800, 119225, 121600, 124496, 128512, 129580, 133760, 136400, 138050, 140800, 147839, 150784, 152608, 155620, 160640, 161975, 167200, 171182, 174592, 176704, 188480, 190760, 194525, 198400, 200800, 207328, 209836, 218240, 220880, 235600, 238450, 243200, 248992, 259160, 262295, 267520, 272800, 276100, 295678, 301568, 305216, 311240, 321280, 323950, 334400, 342364, 353408, 376960, 381520, 389050, 396800, 401600, 414656, 419672, 427955, 436480, 441760, 471200, 476900, 497984, 518320, 524590, 535040, 545600, 552200, 591356, 610432, 622480, 642560, 647900, 668800, 684728, 706816, 739195, 753920, 763040, 778100, 803200, 829312, 839344, 855910, 872960, 883520, 942400, 953800, 995968, 1036640, 1049180, 1091200, 1104400, 1182712, 1220864, 1244960, 1295800, 1311475, 1337600, 1369456, 1413632, 1478390, 1507840, 1526080, 1556200, 1606400, 1626229, 1658624, 1678688, 1711820, 1767040, 1884800, 1907600, 1991936, 2073280, 2098360, 2139775, 2182400, 2208800, 2365424, 2441728, 2489920, 2591600, 2622950, 2675200, 2738912, 2956780, 3052160, 3112400, 3212800, 3252458, 3317248, 3357376, 3423640, 3534080, 3695975, 3769600, 3815200, 3983872, 4146560, 4196720, 4279550, 4364800, 4417600, 4730848, 4979840, 5183200, 5245900, 5477824, 5913560, 6104320, 6224800, 6504916, 6714752, 6847280, 7068160, 7391950, 7539200, 7630400, 8131145, 8293120, 8393440, 8559100, 8835200, 9461696, 9959680, 10366400, 10491800, 10955648, 11827120, 12208640, 12449600, 13009832, 13429504, 13694560, 14783900, 15260800, 16262290, 16586240, 16786880, 17118200, 17670400, 18923392, 19919360, 20732800, 20983600, 21911296, 23654240, 24899200, 26019664, 26859008, 27389120, 29567800, 30521600, 32524580, 33573760, 34236400, 35340800, 37846784, 40655725, 41465600, 41967200, 43822592, 47308480, 49798400, 52039328, 54778240, 59135600, 61043200, 65049160, 67147520, 68472800, 75693568, 81311450, 82931200, 83934400, 94616960, 99596800, 104078656, 109556480, 118271200, 130098320, 134295040, 136945600, 162622900, 167868800, 189233920, 208157312, 219112960, 236542400, 260196640, 273891200, 325245800, 335737600, 378467840, 416314624, 473084800, 520393280, 547782400, 650491600, 671475200, 832629248, 946169600, 1040786560, 1095564800, 1300983200, 1892339200, 2081573120, 2601966400, 4163146240, 5203932800, 10407865600, 20815731200]

約数ペア:

[(1, 20815731200), (2, 10407865600), (4, 5203932800), (5, 4163146240), (8, 2601966400), (10, 2081573120), (11, 1892339200), (16, 1300983200), (19, 1095564800), (20, 1040786560), (22, 946169600), (25, 832629248), (31, 671475200), (32, 650491600), (38, 547782400), (40, 520393280), (44, 473084800), (50, 416314624), (55, 378467840), (62, 335737600), (64, 325245800), (76, 273891200), (80, 260196640), (88, 236542400), (95, 219112960), (100, 208157312), (110, 189233920), (124, 167868800), (128, 162622900), (152, 136945600), (155, 134295040), (160, 130098320), (176, 118271200), (190, 109556480), (200, 104078656), (209, 99596800), (220, 94616960), (248, 83934400), (251, 82931200), (256, 81311450), (275, 75693568), (304, 68472800), (310, 67147520), (320, 65049160), (341, 61043200), (352, 59135600), (380, 54778240), (400, 52039328), (418, 49798400), (440, 47308480), (475, 43822592), (496, 41967200), (502, 41465600), (512, 40655725), (550, 37846784), (589, 35340800), (608, 34236400), (620, 33573760), (640, 32524580), (682, 30521600), (704, 29567800), (760, 27389120), (775, 26859008), (800, 26019664), (836, 24899200), (880, 23654240), (950, 21911296), (992, 20983600), (1004, 20732800), (1045, 19919360), (1100, 18923392), (1178, 17670400), (1216, 17118200), (1240, 16786880), (1255, 16586240), (1280, 16262290), (1364, 15260800), (1408, 14783900), (1520, 13694560), (1550, 13429504), (1600, 13009832), (1672, 12449600), (1705, 12208640), (1760, 11827120), (1900, 10955648), (1984, 10491800), (2008, 10366400), (2090, 9959680), (2200, 9461696), (2356, 8835200), (2432, 8559100), (2480, 8393440), (2510, 8293120), (2560, 8131145), (2728, 7630400), (2761, 7539200), (2816, 7391950), (2945, 7068160), (3040, 6847280), (3100, 6714752), (3200, 6504916), (3344, 6224800), (3410, 6104320), (3520, 5913560), (3800, 5477824), (3968, 5245900), (4016, 5183200), (4180, 4979840), (4400, 4730848), (4712, 4417600), (4769, 4364800), (4864, 4279550), (4960, 4196720), (5020, 4146560), (5225, 3983872), (5456, 3815200), (5522, 3769600), (5632, 3695975), (5890, 3534080), (6080, 3423640), (6200, 3357376), (6275, 3317248), (6400, 3252458), (6479, 3212800), (6688, 3112400), (6820, 3052160), (7040, 2956780), (7600, 2738912), (7781, 2675200), (7936, 2622950), (8032, 2591600), (8360, 2489920), (8525, 2441728), (8800, 2365424), (9424, 2208800), (9538, 2182400), (9728, 2139775), (9920, 2098360), (10040, 2073280), (10450, 1991936), (10912, 1907600), (11044, 1884800), (11780, 1767040), (12160, 1711820), (12400, 1678688), (12550, 1658624), (12800, 1626229), (12958, 1606400), (13376, 1556200), (13640, 1526080), (13805, 1507840), (14080, 1478390), (14725, 1413632), (15200, 1369456), (15562, 1337600), (15872, 1311475), (16064, 1295800), (16720, 1244960), (17050, 1220864), (17600, 1182712), (18848, 1104400), (19076, 1091200), (19840, 1049180), (20080, 1036640), (20900, 995968), (21824, 953800), (22088, 942400), (23560, 883520), (23845, 872960), (24320, 855910), (24800, 839344), (25100, 829312), (25916, 803200), (26752, 778100), (27280, 763040), (27610, 753920), (28160, 739195), (29450, 706816), (30400, 684728), (31124, 668800), (32128, 647900), (32395, 642560), (33440, 622480), (34100, 610432), (35200, 591356), (37696, 552200), (38152, 545600), (38905, 535040), (39680, 524590), (40160, 518320), (41800, 497984), (43648, 476900), (44176, 471200), (47120, 441760), (47690, 436480), (48640, 427955), (49600, 419672), (50200, 414656), (51832, 401600), (52459, 396800), (53504, 389050), (54560, 381520), (55220, 376960), (58900, 353408), (60800, 342364), (62248, 334400), (64256, 323950), (64790, 321280), (66880, 311240), (68200, 305216), (69025, 301568), (70400, 295678), (75392, 276100), (76304, 272800), (77810, 267520), (79360, 262295), (80320, 259160), (83600, 248992), (85591, 243200), (87296, 238450), (88352, 235600), (94240, 220880), (95380, 218240), (99200, 209836), (100400, 207328), (103664, 200800), (104918, 198400), (107008, 194525), (109120, 190760), (110440, 188480), (117800, 176704), (119225, 174592), (121600, 171182), (124496, 167200), (128512, 161975), (129580, 160640), (133760, 155620), (136400, 152608), (138050, 150784), (140800, 147839)]