18695870

素因数分解:

$2^1\times 5^1\times {\mathrm{457}}^1\times {\mathrm{4091}}^1$

素因数の和:4555

約数の個数: 16

約数和(自身を含む): 33734448

約数和(自身を除く): 15038578

約数列:

[1, 2, 5, 10, 457, 914, 2285, 4091, 4570, 8182, 20455, 40910, 1869587, 3739174, 9347935, 18695870]

約数ペア:

[(1, 18695870), (2, 9347935), (5, 3739174), (10, 1869587), (457, 40910), (914, 20455), (2285, 8182), (4091, 4570)]