638996826010

素因数分解:

$2^1\times 5^1\times {\mathrm{391487}}^1\times {\mathrm{163223}}^1$

素因数の和:554717

約数の個数: 16

約数和(自身を含む): 1150204271616

約数和(自身を除く): 511207445606

約数列:

[1, 2, 5, 10, 163223, 326446, 391487, 782974, 816115, 1632230, 1957435, 3914870, 63899682601, 127799365202, 319498413005, 638996826010]

約数ペア:

[(1, 638996826010), (2, 319498413005), (5, 127799365202), (10, 63899682601), (163223, 3914870), (326446, 1957435), (391487, 1632230), (782974, 816115)]