639275336

素因数分解:

$2^3\times 7^1\times {\mathrm{521}}^1\times {\mathrm{21911}}^1$

素因数の和:22445

約数の個数: 32

約数和(自身を含む): 1372567680

約数和(自身を除く): 733292344

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 521, 1042, 2084, 3647, 4168, 7294, 14588, 21911, 29176, 43822, 87644, 153377, 175288, 306754, 613508, 1227016, 11415631, 22831262, 45662524, 79909417, 91325048, 159818834, 319637668, 639275336]

約数ペア:

[(1, 639275336), (2, 319637668), (4, 159818834), (7, 91325048), (8, 79909417), (14, 45662524), (28, 22831262), (56, 11415631), (521, 1227016), (1042, 613508), (2084, 306754), (3647, 175288), (4168, 153377), (7294, 87644), (14588, 43822), (21911, 29176)]