20880605

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1\times {\mathrm{307}}^1$

素因数の和:596

約数の個数: 16

約数和(自身を含む): 25665024

約数和(自身を除く): 4784419

約数列:

[1, 5, 61, 223, 305, 307, 1115, 1535, 13603, 18727, 68015, 68461, 93635, 342305, 4176121, 20880605]

約数ペア:

[(1, 20880605), (5, 4176121), (61, 342305), (223, 93635), (305, 68461), (307, 68015), (1115, 18727), (1535, 13603)]