64421240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{123887}}^1$

素因数の和:123911

約数の個数: 32

約数和(自身を含む): 156098880

約数和(自身を除く): 91677640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 123887, 247774, 495548, 619435, 991096, 1238870, 1610531, 2477740, 3221062, 4955480, 6442124, 8052655, 12884248, 16105310, 32210620, 64421240]

約数ペア:

[(1, 64421240), (2, 32210620), (4, 16105310), (5, 12884248), (8, 8052655), (10, 6442124), (13, 4955480), (20, 3221062), (26, 2477740), (40, 1610531), (52, 1238870), (65, 991096), (104, 619435), (130, 495548), (260, 247774), (520, 123887)]