21118995

素因数分解:

$3^3\times 5^1\times {\mathrm{156437}}^1$

素因数の和:156451

約数の個数: 16

約数和(自身を含む): 37545120

約数和(自身を除く): 16426125

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 156437, 469311, 782185, 1407933, 2346555, 4223799, 7039665, 21118995]

約数ペア:

[(1, 21118995), (3, 7039665), (5, 4223799), (9, 2346555), (15, 1407933), (27, 782185), (45, 469311), (135, 156437)]