20071881

素因数分解:

$3^4\times {\mathrm{383}}^1\times {\mathrm{647}}^1$

素因数の和:1042

約数の個数: 20

約数和(自身を含む): 30108672

約数和(自身を除く): 10036791

約数列:

[1, 3, 9, 27, 81, 383, 647, 1149, 1941, 3447, 5823, 10341, 17469, 31023, 52407, 247801, 743403, 2230209, 6690627, 20071881]

約数ペア:

[(1, 20071881), (3, 6690627), (9, 2230209), (27, 743403), (81, 247801), (383, 52407), (647, 31023), (1149, 17469), (1941, 10341), (3447, 5823)]