21517490

素因数分解:

$2^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{5261}}^1$

素因数の和:5677

約数の個数: 16

約数和(自身を含む): 38833560

約数和(自身を除く): 17316070

約数列:

[1, 2, 5, 10, 409, 818, 2045, 4090, 5261, 10522, 26305, 52610, 2151749, 4303498, 10758745, 21517490]

約数ペア:

[(1, 21517490), (2, 10758745), (5, 4303498), (10, 2151749), (409, 52610), (818, 26305), (2045, 10522), (4090, 5261)]