20251920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6491}}^1$

素因数の和:6520

約数の個数: 80

約数和(自身を含む): 67620672

約数和(自身を除く): 47368752

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 6491, 12982, 19473, 25964, 32455, 38946, 51928, 64910, 77892, 84383, 97365, 103856, 129820, 155784, 168766, 194730, 253149, 259640, 311568, 337532, 389460, 421915, 506298, 519280, 675064, 778920, 843830, 1012596, 1265745, 1350128, 1557840, 1687660, 2025192, 2531490, 3375320, 4050384, 5062980, 6750640, 10125960, 20251920]

約数ペア:

[(1, 20251920), (2, 10125960), (3, 6750640), (4, 5062980), (5, 4050384), (6, 3375320), (8, 2531490), (10, 2025192), (12, 1687660), (13, 1557840), (15, 1350128), (16, 1265745), (20, 1012596), (24, 843830), (26, 778920), (30, 675064), (39, 519280), (40, 506298), (48, 421915), (52, 389460), (60, 337532), (65, 311568), (78, 259640), (80, 253149), (104, 194730), (120, 168766), (130, 155784), (156, 129820), (195, 103856), (208, 97365), (240, 84383), (260, 77892), (312, 64910), (390, 51928), (520, 38946), (624, 32455), (780, 25964), (1040, 19473), (1560, 12982), (3120, 6491)]