290390

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:487

約数の個数: 16

約数和(自身を含む): 531360

約数和(自身を除く): 240970

約数列:

[1, 2, 5, 10, 71, 142, 355, 409, 710, 818, 2045, 4090, 29039, 58078, 145195, 290390]

約数ペア:

[(1, 290390), (2, 145195), (5, 58078), (10, 29039), (71, 4090), (142, 2045), (355, 818), (409, 710)]