21591110

素因数分解:

$2^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{5279}}^1$

素因数の和:5695

約数の個数: 16

約数和(自身を含む): 38966400

約数和(自身を除く): 17375290

約数列:

[1, 2, 5, 10, 409, 818, 2045, 4090, 5279, 10558, 26395, 52790, 2159111, 4318222, 10795555, 21591110]

約数ペア:

[(1, 21591110), (2, 10795555), (5, 4318222), (10, 2159111), (409, 52790), (818, 26395), (2045, 10558), (4090, 5279)]