639442816

素因数分解:

$2^7\times {\mathrm{4995647}}^1$

素因数の和:4995661

約数の個数: 16

約数和(自身を含む): 1273890240

約数和(自身を除く): 634447424

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 4995647, 9991294, 19982588, 39965176, 79930352, 159860704, 319721408, 639442816]

約数ペア:

[(1, 639442816), (2, 319721408), (4, 159860704), (8, 79930352), (16, 39965176), (32, 19982588), (64, 9991294), (128, 4995647)]