8160025

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{419}}^1$

素因数の和:489

約数の個数: 24

約数和(自身を含む): 10936800

約数和(自身を除く): 2776775

約数列:

[1, 5, 19, 25, 41, 95, 205, 419, 475, 779, 1025, 2095, 3895, 7961, 10475, 17179, 19475, 39805, 85895, 199025, 326401, 429475, 1632005, 8160025]

約数ペア:

[(1, 8160025), (5, 1632005), (19, 429475), (25, 326401), (41, 199025), (95, 85895), (205, 39805), (419, 19475), (475, 17179), (779, 10475), (1025, 7961), (2095, 3895)]