21108655

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{613}}^1$

素因数の和:786

約数の個数: 16

約数和(自身を含む): 25994304

約数和(自身を除く): 4885649

約数列:

[1, 5, 71, 97, 355, 485, 613, 3065, 6887, 34435, 43523, 59461, 217615, 297305, 4221731, 21108655]

約数ペア:

[(1, 21108655), (5, 4221731), (71, 297305), (97, 217615), (355, 59461), (485, 43523), (613, 34435), (3065, 6887)]