77982320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{449}}^1$

素因数の和:642

約数の個数: 80

約数和(自身を含む): 196862400

約数和(自身を除く): 118880080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 167, 208, 260, 334, 449, 520, 668, 835, 898, 1040, 1336, 1670, 1796, 2171, 2245, 2672, 3340, 3592, 4342, 4490, 5837, 6680, 7184, 8684, 8980, 10855, 11674, 13360, 17368, 17960, 21710, 23348, 29185, 34736, 35920, 43420, 46696, 58370, 74983, 86840, 93392, 116740, 149966, 173680, 233480, 299932, 374915, 466960, 599864, 749830, 974779, 1199728, 1499660, 1949558, 2999320, 3899116, 4873895, 5998640, 7798232, 9747790, 15596464, 19495580, 38991160, 77982320]

約数ペア:

[(1, 77982320), (2, 38991160), (4, 19495580), (5, 15596464), (8, 9747790), (10, 7798232), (13, 5998640), (16, 4873895), (20, 3899116), (26, 2999320), (40, 1949558), (52, 1499660), (65, 1199728), (80, 974779), (104, 749830), (130, 599864), (167, 466960), (208, 374915), (260, 299932), (334, 233480), (449, 173680), (520, 149966), (668, 116740), (835, 93392), (898, 86840), (1040, 74983), (1336, 58370), (1670, 46696), (1796, 43420), (2171, 35920), (2245, 34736), (2672, 29185), (3340, 23348), (3592, 21710), (4342, 17960), (4490, 17368), (5837, 13360), (6680, 11674), (7184, 10855), (8684, 8980)]