20215587

素因数分解:

$3^1\times 7^2\times {\mathrm{113}}^1\times {\mathrm{1217}}^1$

素因数の和:1347

約数の個数: 24

約数和(自身を含む): 31658256

約数和(自身を除く): 11442669

約数列:

[1, 3, 7, 21, 49, 113, 147, 339, 791, 1217, 2373, 3651, 5537, 8519, 16611, 25557, 59633, 137521, 178899, 412563, 962647, 2887941, 6738529, 20215587]

約数ペア:

[(1, 20215587), (3, 6738529), (7, 2887941), (21, 962647), (49, 412563), (113, 178899), (147, 137521), (339, 59633), (791, 25557), (1217, 16611), (2373, 8519), (3651, 5537)]