21055880

素因数分解:

$2^3\times 5^1\times {\mathrm{526397}}^1$

素因数の和:526408

約数の個数: 16

約数和(自身を含む): 47375820

約数和(自身を除く): 26319940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 526397, 1052794, 2105588, 2631985, 4211176, 5263970, 10527940, 21055880]

約数ペア:

[(1, 21055880), (2, 10527940), (4, 5263970), (5, 4211176), (8, 2631985), (10, 2105588), (20, 1052794), (40, 526397)]