640258138

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{665549}}^1$

素因数の和:665601

約数の個数: 16

約数和(自身を含む): 1062217800

約数和(自身を除く): 421959662

約数列:

[1, 2, 13, 26, 37, 74, 481, 962, 665549, 1331098, 8652137, 17304274, 24625313, 49250626, 320129069, 640258138]

約数ペア:

[(1, 640258138), (2, 320129069), (13, 49250626), (26, 24625313), (37, 17304274), (74, 8652137), (481, 1331098), (962, 665549)]