77886640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{74891}}^1$

素因数の和:74917

約数の個数: 40

約数和(自身を含む): 195018768

約数和(自身を除く): 117132128

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 74891, 149782, 299564, 374455, 599128, 748910, 973583, 1198256, 1497820, 1947166, 2995640, 3894332, 4867915, 5991280, 7788664, 9735830, 15577328, 19471660, 38943320, 77886640]

約数ペア:

[(1, 77886640), (2, 38943320), (4, 19471660), (5, 15577328), (8, 9735830), (10, 7788664), (13, 5991280), (16, 4867915), (20, 3894332), (26, 2995640), (40, 1947166), (52, 1497820), (65, 1198256), (80, 973583), (104, 748910), (130, 599128), (208, 374455), (260, 299564), (520, 149782), (1040, 74891)]