20550879

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1109}}^1$

素因数の和:1215

約数の個数: 24

約数和(自身を含む): 31168800

約数和(自身を除く): 10617921

約数列:

[1, 3, 9, 29, 71, 87, 213, 261, 639, 1109, 2059, 3327, 6177, 9981, 18531, 32161, 78739, 96483, 236217, 289449, 708651, 2283431, 6850293, 20550879]

約数ペア:

[(1, 20550879), (3, 6850293), (9, 2283431), (29, 708651), (71, 289449), (87, 236217), (213, 96483), (261, 78739), (639, 32161), (1109, 18531), (2059, 9981), (3327, 6177)]