20405943

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{2539}}^1$

素因数の和:2611

約数の個数: 24

約数和(自身を含む): 31699200

約数和(自身を除く): 11293257

約数列:

[1, 3, 9, 19, 47, 57, 141, 171, 423, 893, 2539, 2679, 7617, 8037, 22851, 48241, 119333, 144723, 357999, 434169, 1073997, 2267327, 6801981, 20405943]

約数ペア:

[(1, 20405943), (3, 6801981), (9, 2267327), (19, 1073997), (47, 434169), (57, 357999), (141, 144723), (171, 119333), (423, 48241), (893, 22851), (2539, 8037), (2679, 7617)]