20391309

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{757}}^1$

素因数の和:877

約数の個数: 24

約数和(自身を含む): 30626232

約数和(自身を除く): 10234923

約数列:

[1, 3, 9, 41, 73, 123, 219, 369, 657, 757, 2271, 2993, 6813, 8979, 26937, 31037, 55261, 93111, 165783, 279333, 497349, 2265701, 6797103, 20391309]

約数ペア:

[(1, 20391309), (3, 6797103), (9, 2265701), (41, 497349), (73, 279333), (123, 165783), (219, 93111), (369, 55261), (657, 31037), (757, 26937), (2271, 8979), (2993, 6813)]