20659550

素因数分解:

$2^1\times 5^2\times {\mathrm{101}}^1\times {\mathrm{4091}}^1$

素因数の和:4204

約数の個数: 24

約数和(自身を含む): 38816712

約数和(自身を除く): 18157162

約数列:

[1, 2, 5, 10, 25, 50, 101, 202, 505, 1010, 2525, 4091, 5050, 8182, 20455, 40910, 102275, 204550, 413191, 826382, 2065955, 4131910, 10329775, 20659550]

約数ペア:

[(1, 20659550), (2, 10329775), (5, 4131910), (10, 2065955), (25, 826382), (50, 413191), (101, 204550), (202, 102275), (505, 40910), (1010, 20455), (2525, 8182), (4091, 5050)]