20394225

素因数分解:

$3^2\times 5^2\times {\mathrm{90641}}^1$

素因数の和:90657

約数の個数: 18

約数和(自身を含む): 36528726

約数和(自身を除く): 16134501

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 90641, 271923, 453205, 815769, 1359615, 2266025, 4078845, 6798075, 20394225]

約数ペア:

[(1, 20394225), (3, 6798075), (5, 4078845), (9, 2266025), (15, 1359615), (25, 815769), (45, 453205), (75, 271923), (225, 90641)]