21194210

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{29851}}^1$

素因数の和:29929

約数の個数: 16

約数和(自身を含む): 38688192

約数和(自身を除く): 17493982

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 29851, 59702, 149255, 298510, 2119421, 4238842, 10597105, 21194210]

約数ペア:

[(1, 21194210), (2, 10597105), (5, 4238842), (10, 2119421), (71, 298510), (142, 149255), (355, 59702), (710, 29851)]