20979225

素因数分解:

$3^2\times 5^2\times {\mathrm{93241}}^1$

素因数の和:93257

約数の個数: 18

約数和(自身を含む): 37576526

約数和(自身を除く): 16597301

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 93241, 279723, 466205, 839169, 1398615, 2331025, 4195845, 6993075, 20979225]

約数ペア:

[(1, 20979225), (3, 6993075), (5, 4195845), (9, 2331025), (15, 1398615), (25, 839169), (45, 466205), (75, 279723), (225, 93241)]