3980555

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:518

約数の個数: 16

約数和(自身を含む): 5023488

約数和(自身を除く): 1042933

約数列:

[1, 5, 31, 61, 155, 305, 421, 1891, 2105, 9455, 13051, 25681, 65255, 128405, 796111, 3980555]

約数ペア:

[(1, 3980555), (5, 796111), (31, 128405), (61, 65255), (155, 25681), (305, 13051), (421, 9455), (1891, 2105)]