81156525

素因数分解:

$3^1\times 5^2\times {\mathrm{523}}^1\times {\mathrm{2069}}^1$

素因数の和:2605

約数の個数: 24

約数和(自身を含む): 134500320

約数和(自身を除く): 53343795

約数列:

[1, 3, 5, 15, 25, 75, 523, 1569, 2069, 2615, 6207, 7845, 10345, 13075, 31035, 39225, 51725, 155175, 1082087, 3246261, 5410435, 16231305, 27052175, 81156525]

約数ペア:

[(1, 81156525), (3, 27052175), (5, 16231305), (15, 5410435), (25, 3246261), (75, 1082087), (523, 155175), (1569, 51725), (2069, 39225), (2615, 31035), (6207, 13075), (7845, 10345)]