21528825

素因数分解:

$3^1\times 5^2\times {\mathrm{151}}^1\times {\mathrm{1901}}^1$

素因数の和:2065

約数の個数: 24

約数和(自身を含む): 35848896

約数和(自身を除く): 14320071

約数列:

[1, 3, 5, 15, 25, 75, 151, 453, 755, 1901, 2265, 3775, 5703, 9505, 11325, 28515, 47525, 142575, 287051, 861153, 1435255, 4305765, 7176275, 21528825]

約数ペア:

[(1, 21528825), (3, 7176275), (5, 4305765), (15, 1435255), (25, 861153), (75, 287051), (151, 142575), (453, 47525), (755, 28515), (1901, 11325), (2265, 9505), (3775, 5703)]