81894075

素因数分解:

$3^1\times 5^2\times {\mathrm{311}}^1\times {\mathrm{3511}}^1$

素因数の和:3835

約数の個数: 24

約数和(自身を含む): 135872256

約数和(自身を除く): 53978181

約数列:

[1, 3, 5, 15, 25, 75, 311, 933, 1555, 3511, 4665, 7775, 10533, 17555, 23325, 52665, 87775, 263325, 1091921, 3275763, 5459605, 16378815, 27298025, 81894075]

約数ペア:

[(1, 81894075), (3, 27298025), (5, 16378815), (15, 5459605), (25, 3275763), (75, 1091921), (311, 263325), (933, 87775), (1555, 52665), (3511, 23325), (4665, 17555), (7775, 10533)]