21189075

素因数分解:

$3^1\times 5^2\times {\mathrm{151}}^1\times {\mathrm{1871}}^1$

素因数の和:2035

約数の個数: 24

約数和(自身を含む): 35283456

約数和(自身を除く): 14094381

約数列:

[1, 3, 5, 15, 25, 75, 151, 453, 755, 1871, 2265, 3775, 5613, 9355, 11325, 28065, 46775, 140325, 282521, 847563, 1412605, 4237815, 7063025, 21189075]

約数ペア:

[(1, 21189075), (3, 7063025), (5, 4237815), (15, 1412605), (25, 847563), (75, 282521), (151, 140325), (453, 46775), (755, 28065), (1871, 11325), (2265, 9355), (3775, 5613)]