19887120

素因数分解:

$2^4\times 3^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1$

素因数の和:73

約数の個数: 280

約数和(自身を含む): 78066432

約数和(自身を除く): 58179312

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 31, 33, 36, 40, 44, 45, 48, 54, 55, 60, 62, 66, 72, 80, 81, 88, 90, 93, 99, 108, 110, 120, 124, 132, 135, 144, 155, 162, 165, 176, 180, 186, 198, 216, 220, 240, 243, 248, 264, 270, 279, 297, 310, 324, 330, 341, 360, 372, 396, 405, 432, 440, 465, 486, 495, 496, 528, 540, 558, 594, 620, 648, 660, 682, 720, 729, 744, 792, 810, 837, 880, 891, 930, 972, 990, 1023, 1080, 1116, 1188, 1215, 1240, 1296, 1320, 1364, 1395, 1458, 1485, 1488, 1584, 1620, 1674, 1705, 1782, 1860, 1944, 1980, 2046, 2160, 2232, 2376, 2430, 2480, 2511, 2640, 2673, 2728, 2790, 2916, 2970, 3069, 3240, 3348, 3410, 3564, 3645, 3720, 3888, 3960, 4092, 4185, 4455, 4464, 4752, 4860, 5022, 5115, 5346, 5456, 5580, 5832, 5940, 6138, 6480, 6696, 6820, 7128, 7290, 7440, 7533, 7920, 8019, 8184, 8370, 8910, 9207, 9720, 10044, 10230, 10692, 11160, 11664, 11880, 12276, 12555, 13365, 13392, 13640, 14256, 14580, 15066, 15345, 16038, 16368, 16740, 17820, 18414, 19440, 20088, 20460, 21384, 22320, 22599, 23760, 24552, 25110, 26730, 27280, 27621, 29160, 30132, 30690, 32076, 33480, 35640, 36828, 37665, 40095, 40176, 40920, 42768, 45198, 46035, 49104, 50220, 53460, 55242, 58320, 60264, 61380, 64152, 66960, 71280, 73656, 75330, 80190, 81840, 82863, 90396, 92070, 100440, 106920, 110484, 112995, 120528, 122760, 128304, 138105, 147312, 150660, 160380, 165726, 180792, 184140, 200880, 213840, 220968, 225990, 245520, 248589, 276210, 301320, 320760, 331452, 361584, 368280, 414315, 441936, 451980, 497178, 552420, 602640, 641520, 662904, 736560, 828630, 903960, 994356, 1104840, 1242945, 1325808, 1657260, 1807920, 1988712, 2209680, 2485890, 3314520, 3977424, 4971780, 6629040, 9943560, 19887120]

約数ペア:

[(1, 19887120), (2, 9943560), (3, 6629040), (4, 4971780), (5, 3977424), (6, 3314520), (8, 2485890), (9, 2209680), (10, 1988712), (11, 1807920), (12, 1657260), (15, 1325808), (16, 1242945), (18, 1104840), (20, 994356), (22, 903960), (24, 828630), (27, 736560), (30, 662904), (31, 641520), (33, 602640), (36, 552420), (40, 497178), (44, 451980), (45, 441936), (48, 414315), (54, 368280), (55, 361584), (60, 331452), (62, 320760), (66, 301320), (72, 276210), (80, 248589), (81, 245520), (88, 225990), (90, 220968), (93, 213840), (99, 200880), (108, 184140), (110, 180792), (120, 165726), (124, 160380), (132, 150660), (135, 147312), (144, 138105), (155, 128304), (162, 122760), (165, 120528), (176, 112995), (180, 110484), (186, 106920), (198, 100440), (216, 92070), (220, 90396), (240, 82863), (243, 81840), (248, 80190), (264, 75330), (270, 73656), (279, 71280), (297, 66960), (310, 64152), (324, 61380), (330, 60264), (341, 58320), (360, 55242), (372, 53460), (396, 50220), (405, 49104), (432, 46035), (440, 45198), (465, 42768), (486, 40920), (495, 40176), (496, 40095), (528, 37665), (540, 36828), (558, 35640), (594, 33480), (620, 32076), (648, 30690), (660, 30132), (682, 29160), (720, 27621), (729, 27280), (744, 26730), (792, 25110), (810, 24552), (837, 23760), (880, 22599), (891, 22320), (930, 21384), (972, 20460), (990, 20088), (1023, 19440), (1080, 18414), (1116, 17820), (1188, 16740), (1215, 16368), (1240, 16038), (1296, 15345), (1320, 15066), (1364, 14580), (1395, 14256), (1458, 13640), (1485, 13392), (1488, 13365), (1584, 12555), (1620, 12276), (1674, 11880), (1705, 11664), (1782, 11160), (1860, 10692), (1944, 10230), (1980, 10044), (2046, 9720), (2160, 9207), (2232, 8910), (2376, 8370), (2430, 8184), (2480, 8019), (2511, 7920), (2640, 7533), (2673, 7440), (2728, 7290), (2790, 7128), (2916, 6820), (2970, 6696), (3069, 6480), (3240, 6138), (3348, 5940), (3410, 5832), (3564, 5580), (3645, 5456), (3720, 5346), (3888, 5115), (3960, 5022), (4092, 4860), (4185, 4752), (4455, 4464)]