209880212

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{990001}}^1$

素因数の和:990058

約数の個数: 12

約数和(自身を含む): 374220756

約数和(自身を除く): 164340544

約数列:

[1, 2, 4, 53, 106, 212, 990001, 1980002, 3960004, 52470053, 104940106, 209880212]

約数ペア:

[(1, 209880212), (2, 104940106), (4, 52470053), (53, 3960004), (106, 1980002), (212, 990001)]