16311775

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{151}}^1$

素因数の和:339

約数の個数: 24

約数和(自身を含む): 21204000

約数和(自身を除く): 4892225

約数列:

[1, 5, 25, 29, 145, 149, 151, 725, 745, 755, 3725, 3775, 4321, 4379, 21605, 21895, 22499, 108025, 109475, 112495, 562475, 652471, 3262355, 16311775]

約数ペア:

[(1, 16311775), (5, 3262355), (25, 652471), (29, 562475), (145, 112495), (149, 109475), (151, 108025), (725, 22499), (745, 21895), (755, 21605), (3725, 4379), (3775, 4321)]