20881815

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{60527}}^1$

素因数の和:60558

約数の個数: 16

約数和(自身を含む): 34864128

約数和(自身を除く): 13982313

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 60527, 181581, 302635, 907905, 1392121, 4176363, 6960605, 20881815]

約数ペア:

[(1, 20881815), (3, 6960605), (5, 4176363), (15, 1392121), (23, 907905), (69, 302635), (115, 181581), (345, 60527)]