81888025

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{179}}^1\times {\mathrm{631}}^1$

素因数の和:849

約数の個数: 24

約数和(自身を含む): 105796800

約数和(自身を除く): 23908775

約数列:

[1, 5, 25, 29, 145, 179, 631, 725, 895, 3155, 4475, 5191, 15775, 18299, 25955, 91495, 112949, 129775, 457475, 564745, 2823725, 3275521, 16377605, 81888025]

約数ペア:

[(1, 81888025), (5, 16377605), (25, 3275521), (29, 2823725), (145, 564745), (179, 457475), (631, 129775), (725, 112949), (895, 91495), (3155, 25955), (4475, 18299), (5191, 15775)]