20681020

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4637}}^1$

素因数の和:4869

約数の個数: 24

約数和(自身を含む): 43634304

約数和(自身を除く): 22953284

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 4637, 9274, 18548, 23185, 46370, 92740, 1034051, 2068102, 4136204, 5170255, 10340510, 20681020]

約数ペア:

[(1, 20681020), (2, 10340510), (4, 5170255), (5, 4136204), (10, 2068102), (20, 1034051), (223, 92740), (446, 46370), (892, 23185), (1115, 18548), (2230, 9274), (4460, 4637)]