20591625

素因数分解:

$3^1\times 5^3\times {\mathrm{43}}^1\times {\mathrm{1277}}^1$

素因数の和:1338

約数の個数: 32

約数和(自身を含む): 35088768

約数和(自身を除く): 14497143

約数列:

[1, 3, 5, 15, 25, 43, 75, 125, 129, 215, 375, 645, 1075, 1277, 3225, 3831, 5375, 6385, 16125, 19155, 31925, 54911, 95775, 159625, 164733, 274555, 478875, 823665, 1372775, 4118325, 6863875, 20591625]

約数ペア:

[(1, 20591625), (3, 6863875), (5, 4118325), (15, 1372775), (25, 823665), (43, 478875), (75, 274555), (125, 164733), (129, 159625), (215, 95775), (375, 54911), (645, 31925), (1075, 19155), (1277, 16125), (3225, 6385), (3831, 5375)]