21118012

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{310559}}^1$

素因数の和:310580

約数の個数: 12

約数和(自身を含む): 39130560

約数和(自身を除く): 18012548

約数列:

[1, 2, 4, 17, 34, 68, 310559, 621118, 1242236, 5279503, 10559006, 21118012]

約数ペア:

[(1, 21118012), (2, 10559006), (4, 5279503), (17, 1242236), (34, 621118), (68, 310559)]