64197640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{123457}}^1$

素因数の和:123481

約数の個数: 32

約数和(自身を含む): 155557080

約数和(自身を除く): 91359440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 123457, 246914, 493828, 617285, 987656, 1234570, 1604941, 2469140, 3209882, 4938280, 6419764, 8024705, 12839528, 16049410, 32098820, 64197640]

約数ペア:

[(1, 64197640), (2, 32098820), (4, 16049410), (5, 12839528), (8, 8024705), (10, 6419764), (13, 4938280), (20, 3209882), (26, 2469140), (40, 1604941), (52, 1234570), (65, 987656), (104, 617285), (130, 493828), (260, 246914), (520, 123457)]