639352

素因数分解:

$2^3\times 7^3\times {\mathrm{233}}^1$

素因数の和:260

約数の個数: 32

約数和(自身を含む): 1404000

約数和(自身を除く): 764648

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 233, 343, 392, 466, 686, 932, 1372, 1631, 1864, 2744, 3262, 6524, 11417, 13048, 22834, 45668, 79919, 91336, 159838, 319676, 639352]

約数ペア:

[(1, 639352), (2, 319676), (4, 159838), (7, 91336), (8, 79919), (14, 45668), (28, 22834), (49, 13048), (56, 11417), (98, 6524), (196, 3262), (233, 2744), (343, 1864), (392, 1631), (466, 1372), (686, 932)]