21222610

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^2\times {\mathrm{421}}^1$

素因数の和:570

約数の個数: 24

約数和(自身を含む): 38838348

約数和(自身を除く): 17615738

約数列:

[1, 2, 5, 10, 71, 142, 355, 421, 710, 842, 2105, 4210, 5041, 10082, 25205, 29891, 50410, 59782, 149455, 298910, 2122261, 4244522, 10611305, 21222610]

約数ペア:

[(1, 21222610), (2, 10611305), (5, 4244522), (10, 2122261), (71, 298910), (142, 149455), (355, 59782), (421, 50410), (710, 29891), (842, 25205), (2105, 10082), (4210, 5041)]