1221498910

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1720421}}^1$

素因数の和:1720499

約数の個数: 16

約数和(自身を含む): 2229666912

約数和(自身を除く): 1008168002

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 1720421, 3440842, 8602105, 17204210, 122149891, 244299782, 610749455, 1221498910]

約数ペア:

[(1, 1221498910), (2, 610749455), (5, 244299782), (10, 122149891), (71, 17204210), (142, 8602105), (355, 3440842), (710, 1720421)]