20313990

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{809}}^1$

素因数の和:859

約数の個数: 80

約数和(自身を含む): 56453760

約数和(自身を除く): 36139770

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 31, 45, 54, 62, 81, 90, 93, 135, 155, 162, 186, 270, 279, 310, 405, 465, 558, 809, 810, 837, 930, 1395, 1618, 1674, 2427, 2511, 2790, 4045, 4185, 4854, 5022, 7281, 8090, 8370, 12135, 12555, 14562, 21843, 24270, 25079, 25110, 36405, 43686, 50158, 65529, 72810, 75237, 109215, 125395, 131058, 150474, 218430, 225711, 250790, 327645, 376185, 451422, 655290, 677133, 752370, 1128555, 1354266, 2031399, 2257110, 3385665, 4062798, 6771330, 10156995, 20313990]

約数ペア:

[(1, 20313990), (2, 10156995), (3, 6771330), (5, 4062798), (6, 3385665), (9, 2257110), (10, 2031399), (15, 1354266), (18, 1128555), (27, 752370), (30, 677133), (31, 655290), (45, 451422), (54, 376185), (62, 327645), (81, 250790), (90, 225711), (93, 218430), (135, 150474), (155, 131058), (162, 125395), (186, 109215), (270, 75237), (279, 72810), (310, 65529), (405, 50158), (465, 43686), (558, 36405), (809, 25110), (810, 25079), (837, 24270), (930, 21843), (1395, 14562), (1618, 12555), (1674, 12135), (2427, 8370), (2511, 8090), (2790, 7281), (4045, 5022), (4185, 4854)]