20355993

素因数分解:

$3^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{3137}}^1$

素因数の和:3253

約数の個数: 24

約数和(自身を含む): 33940608

約数和(自身を除く): 13584615

約数列:

[1, 3, 7, 9, 21, 63, 103, 309, 721, 927, 2163, 3137, 6489, 9411, 21959, 28233, 65877, 197631, 323111, 969333, 2261777, 2907999, 6785331, 20355993]

約数ペア:

[(1, 20355993), (3, 6785331), (7, 2907999), (9, 2261777), (21, 969333), (63, 323111), (103, 197631), (309, 65877), (721, 28233), (927, 21959), (2163, 9411), (3137, 6489)]