217879905

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{854431}}^1$

素因数の和:854456

約数の個数: 16

約数和(自身を含む): 369114624

約数和(自身を除く): 151234719

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 854431, 2563293, 4272155, 12816465, 14525327, 43575981, 72626635, 217879905]

約数ペア:

[(1, 217879905), (3, 72626635), (5, 43575981), (15, 14525327), (17, 12816465), (51, 4272155), (85, 2563293), (255, 854431)]