20419328000

素因数分解:

$2^{11}\times 5^3\times {\mathrm{31}}^2\times {\mathrm{83}}^1$

素因数の和:182

約数の個数: 288

約数和(自身を含む): 53285253840

約数和(自身を除く): 32865925840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 83, 100, 124, 125, 128, 155, 160, 166, 200, 248, 250, 256, 310, 320, 332, 400, 415, 496, 500, 512, 620, 640, 664, 775, 800, 830, 961, 992, 1000, 1024, 1240, 1280, 1328, 1550, 1600, 1660, 1922, 1984, 2000, 2048, 2075, 2480, 2560, 2573, 2656, 3100, 3200, 3320, 3844, 3875, 3968, 4000, 4150, 4805, 4960, 5120, 5146, 5312, 6200, 6400, 6640, 7688, 7750, 7936, 8000, 8300, 9610, 9920, 10240, 10292, 10375, 10624, 12400, 12800, 12865, 13280, 15376, 15500, 15872, 16000, 16600, 19220, 19840, 20584, 20750, 21248, 24025, 24800, 25600, 25730, 26560, 30752, 31000, 31744, 32000, 33200, 38440, 39680, 41168, 41500, 42496, 48050, 49600, 51200, 51460, 53120, 61504, 62000, 63488, 64000, 64325, 66400, 76880, 79360, 79763, 82336, 83000, 84992, 96100, 99200, 102920, 106240, 120125, 123008, 124000, 128000, 128650, 132800, 153760, 158720, 159526, 164672, 166000, 169984, 192200, 198400, 205840, 212480, 240250, 246016, 248000, 256000, 257300, 265600, 307520, 317440, 319052, 321625, 329344, 332000, 384400, 396800, 398815, 411680, 424960, 480500, 492032, 496000, 514600, 531200, 615040, 638104, 643250, 658688, 664000, 768800, 793600, 797630, 823360, 849920, 961000, 984064, 992000, 1029200, 1062400, 1230080, 1276208, 1286500, 1317376, 1328000, 1537600, 1587200, 1595260, 1646720, 1922000, 1968128, 1984000, 1994075, 2058400, 2124800, 2460160, 2552416, 2573000, 2634752, 2656000, 3075200, 3190520, 3293440, 3844000, 3968000, 3988150, 4116800, 4249600, 4920320, 5104832, 5146000, 5269504, 5312000, 6150400, 6381040, 6586880, 7688000, 7936000, 7976300, 8233600, 9840640, 9970375, 10209664, 10292000, 10624000, 12300800, 12762080, 13173760, 15376000, 15952600, 16467200, 19940750, 20419328, 20584000, 21248000, 24601600, 25524160, 26347520, 30752000, 31905200, 32934400, 39881500, 40838656, 41168000, 49203200, 51048320, 61504000, 63810400, 65868800, 79763000, 81677312, 82336000, 102096640, 123008000, 127620800, 131737600, 159526000, 163354624, 164672000, 204193280, 246016000, 255241600, 319052000, 329344000, 408386560, 510483200, 638104000, 658688000, 816773120, 1020966400, 1276208000, 2041932800, 2552416000, 4083865600, 5104832000, 10209664000, 20419328000]

約数ペア:

[(1, 20419328000), (2, 10209664000), (4, 5104832000), (5, 4083865600), (8, 2552416000), (10, 2041932800), (16, 1276208000), (20, 1020966400), (25, 816773120), (31, 658688000), (32, 638104000), (40, 510483200), (50, 408386560), (62, 329344000), (64, 319052000), (80, 255241600), (83, 246016000), (100, 204193280), (124, 164672000), (125, 163354624), (128, 159526000), (155, 131737600), (160, 127620800), (166, 123008000), (200, 102096640), (248, 82336000), (250, 81677312), (256, 79763000), (310, 65868800), (320, 63810400), (332, 61504000), (400, 51048320), (415, 49203200), (496, 41168000), (500, 40838656), (512, 39881500), (620, 32934400), (640, 31905200), (664, 30752000), (775, 26347520), (800, 25524160), (830, 24601600), (961, 21248000), (992, 20584000), (1000, 20419328), (1024, 19940750), (1240, 16467200), (1280, 15952600), (1328, 15376000), (1550, 13173760), (1600, 12762080), (1660, 12300800), (1922, 10624000), (1984, 10292000), (2000, 10209664), (2048, 9970375), (2075, 9840640), (2480, 8233600), (2560, 7976300), (2573, 7936000), (2656, 7688000), (3100, 6586880), (3200, 6381040), (3320, 6150400), (3844, 5312000), (3875, 5269504), (3968, 5146000), (4000, 5104832), (4150, 4920320), (4805, 4249600), (4960, 4116800), (5120, 3988150), (5146, 3968000), (5312, 3844000), (6200, 3293440), (6400, 3190520), (6640, 3075200), (7688, 2656000), (7750, 2634752), (7936, 2573000), (8000, 2552416), (8300, 2460160), (9610, 2124800), (9920, 2058400), (10240, 1994075), (10292, 1984000), (10375, 1968128), (10624, 1922000), (12400, 1646720), (12800, 1595260), (12865, 1587200), (13280, 1537600), (15376, 1328000), (15500, 1317376), (15872, 1286500), (16000, 1276208), (16600, 1230080), (19220, 1062400), (19840, 1029200), (20584, 992000), (20750, 984064), (21248, 961000), (24025, 849920), (24800, 823360), (25600, 797630), (25730, 793600), (26560, 768800), (30752, 664000), (31000, 658688), (31744, 643250), (32000, 638104), (33200, 615040), (38440, 531200), (39680, 514600), (41168, 496000), (41500, 492032), (42496, 480500), (48050, 424960), (49600, 411680), (51200, 398815), (51460, 396800), (53120, 384400), (61504, 332000), (62000, 329344), (63488, 321625), (64000, 319052), (64325, 317440), (66400, 307520), (76880, 265600), (79360, 257300), (79763, 256000), (82336, 248000), (83000, 246016), (84992, 240250), (96100, 212480), (99200, 205840), (102920, 198400), (106240, 192200), (120125, 169984), (123008, 166000), (124000, 164672), (128000, 159526), (128650, 158720), (132800, 153760)]