20698923

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7411}}^1$

素因数の和:7447

約数の個数: 24

約数和(自身を含む): 33798720

約数和(自身を除く): 13099797

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7411, 22233, 51877, 140809, 155631, 363139, 422427, 985663, 1089417, 2956989, 6899641, 20698923]

約数ペア:

[(1, 20698923), (3, 6899641), (7, 2956989), (19, 1089417), (21, 985663), (49, 422427), (57, 363139), (133, 155631), (147, 140809), (399, 51877), (931, 22233), (2793, 7411)]