40437340

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28477}}^1$

素因数の和:28557

約数の個数: 24

約数和(自身を含む): 86117472

約数和(自身を除く): 45680132

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 28477, 56954, 113908, 142385, 284770, 569540, 2021867, 4043734, 8087468, 10109335, 20218670, 40437340]

約数ペア:

[(1, 40437340), (2, 20218670), (4, 10109335), (5, 8087468), (10, 4043734), (20, 2021867), (71, 569540), (142, 284770), (284, 142385), (355, 113908), (710, 56954), (1420, 28477)]