639652605

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1375597}}^1$

素因数の和:1375636

約数の個数: 16

約数和(自身を含む): 1056459264

約数和(自身を除く): 416806659

約数列:

[1, 3, 5, 15, 31, 93, 155, 465, 1375597, 4126791, 6877985, 20633955, 42643507, 127930521, 213217535, 639652605]

約数ペア:

[(1, 639652605), (3, 213217535), (5, 127930521), (15, 42643507), (31, 20633955), (93, 6877985), (155, 4126791), (465, 1375597)]