20640193

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{1621}}^1$

素因数の和:1752

約数の個数: 16

約数和(自身を含む): 25225344

約数和(自身を除く): 4585151

約数列:

[1, 7, 17, 107, 119, 749, 1621, 1819, 11347, 12733, 27557, 173447, 192899, 1214129, 2948599, 20640193]

約数ペア:

[(1, 20640193), (7, 2948599), (17, 1214129), (107, 192899), (119, 173447), (749, 27557), (1621, 12733), (1819, 11347)]