21652460

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{2647}}^1$

素因数の和:3065

約数の個数: 24

約数和(自身を含む): 45598560

約数和(自身を除く): 23946100

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 2647, 4090, 5294, 8180, 10588, 13235, 26470, 52940, 1082623, 2165246, 4330492, 5413115, 10826230, 21652460]

約数ペア:

[(1, 21652460), (2, 10826230), (4, 5413115), (5, 4330492), (10, 2165246), (20, 1082623), (409, 52940), (818, 26470), (1636, 13235), (2045, 10588), (2647, 8180), (4090, 5294)]