17980025

素因数分解:

$5^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{809}}^1$

素因数の和:953

約数の個数: 24

約数和(自身を含む): 25712640

約数和(自身を除く): 7732615

約数列:

[1, 5, 7, 25, 35, 127, 175, 635, 809, 889, 3175, 4045, 4445, 5663, 20225, 22225, 28315, 102743, 141575, 513715, 719201, 2568575, 3596005, 17980025]

約数ペア:

[(1, 17980025), (5, 3596005), (7, 2568575), (25, 719201), (35, 513715), (127, 141575), (175, 102743), (635, 28315), (809, 22225), (889, 20225), (3175, 5663), (4045, 4445)]