217157085

素因数分解:

$3^3\times 5^1\times {\mathrm{1608571}}^1$

素因数の和:1608585

約数の個数: 16

約数和(自身を含む): 386057280

約数和(自身を除く): 168900195

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 1608571, 4825713, 8042855, 14477139, 24128565, 43431417, 72385695, 217157085]

約数ペア:

[(1, 217157085), (3, 72385695), (5, 43431417), (9, 24128565), (15, 14477139), (27, 8042855), (45, 4825713), (135, 1608571)]