18439765

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{409}}^1$

素因数の和:612

約数の個数: 16

約数和(自身を含む): 22671360

約数和(自身を除く): 4231595

約数列:

[1, 5, 71, 127, 355, 409, 635, 2045, 9017, 29039, 45085, 51943, 145195, 259715, 3687953, 18439765]

約数ペア:

[(1, 18439765), (5, 3687953), (71, 259715), (127, 145195), (355, 51943), (409, 45085), (635, 29039), (2045, 9017)]