20390760

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4357}}^1$

素因数の和:4387

約数の個数: 96

約数和(自身を含む): 71384040

約数和(自身を除く): 50993280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 156, 180, 195, 234, 260, 312, 360, 390, 468, 520, 585, 780, 936, 1170, 1560, 2340, 4357, 4680, 8714, 13071, 17428, 21785, 26142, 34856, 39213, 43570, 52284, 56641, 65355, 78426, 87140, 104568, 113282, 130710, 156852, 169923, 174280, 196065, 226564, 261420, 283205, 313704, 339846, 392130, 453128, 509769, 522840, 566410, 679692, 784260, 849615, 1019538, 1132820, 1359384, 1568520, 1699230, 2039076, 2265640, 2548845, 3398460, 4078152, 5097690, 6796920, 10195380, 20390760]

約数ペア:

[(1, 20390760), (2, 10195380), (3, 6796920), (4, 5097690), (5, 4078152), (6, 3398460), (8, 2548845), (9, 2265640), (10, 2039076), (12, 1699230), (13, 1568520), (15, 1359384), (18, 1132820), (20, 1019538), (24, 849615), (26, 784260), (30, 679692), (36, 566410), (39, 522840), (40, 509769), (45, 453128), (52, 392130), (60, 339846), (65, 313704), (72, 283205), (78, 261420), (90, 226564), (104, 196065), (117, 174280), (120, 169923), (130, 156852), (156, 130710), (180, 113282), (195, 104568), (234, 87140), (260, 78426), (312, 65355), (360, 56641), (390, 52284), (468, 43570), (520, 39213), (585, 34856), (780, 26142), (936, 21785), (1170, 17428), (1560, 13071), (2340, 8714), (4357, 4680)]