81313025

素因数分解:

$5^2\times {\mathrm{83}}^1\times {\mathrm{149}}^1\times {\mathrm{263}}^1$

素因数の和:505

約数の個数: 24

約数和(自身を含む): 103118400

約数和(自身を除く): 21805375

約数列:

[1, 5, 25, 83, 149, 263, 415, 745, 1315, 2075, 3725, 6575, 12367, 21829, 39187, 61835, 109145, 195935, 309175, 545725, 979675, 3252521, 16262605, 81313025]

約数ペア:

[(1, 81313025), (5, 16262605), (25, 3252521), (83, 979675), (149, 545725), (263, 309175), (415, 195935), (745, 109145), (1315, 61835), (2075, 39187), (3725, 21829), (6575, 12367)]