21182110

素因数分解:

$2^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{5179}}^1$

素因数の和:5595

約数の個数: 16

約数和(自身を含む): 38228400

約数和(自身を除く): 17046290

約数列:

[1, 2, 5, 10, 409, 818, 2045, 4090, 5179, 10358, 25895, 51790, 2118211, 4236422, 10591055, 21182110]

約数ペア:

[(1, 21182110), (2, 10591055), (5, 4236422), (10, 2118211), (409, 51790), (818, 25895), (2045, 10358), (4090, 5179)]