28407525

素因数分解:

$3^1\times 5^2\times {\mathrm{521}}^1\times {\mathrm{727}}^1$

素因数の和:1261

約数の個数: 24

約数和(自身を含む): 47121984

約数和(自身を除く): 18714459

約数列:

[1, 3, 5, 15, 25, 75, 521, 727, 1563, 2181, 2605, 3635, 7815, 10905, 13025, 18175, 39075, 54525, 378767, 1136301, 1893835, 5681505, 9469175, 28407525]

約数ペア:

[(1, 28407525), (3, 9469175), (5, 5681505), (15, 1893835), (25, 1136301), (75, 378767), (521, 54525), (727, 39075), (1563, 18175), (2181, 13025), (2605, 10905), (3635, 7815)]