664790399

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{80279}}^1$

素因数の和:80319

約数の個数: 18

約数和(自身を含む): 837400680

約数和(自身を除く): 172610281

約数列:

[1, 7, 13, 49, 91, 169, 637, 1183, 8281, 80279, 561953, 1043627, 3933671, 7305389, 13567151, 51137723, 94970057, 664790399]

約数ペア:

[(1, 664790399), (7, 94970057), (13, 51137723), (49, 13567151), (91, 7305389), (169, 3933671), (637, 1043627), (1183, 561953), (8281, 80279)]