638265

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2503}}^1$

素因数の和:2528

約数の個数: 16

約数和(自身を含む): 1081728

約数和(自身を除く): 443463

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 2503, 7509, 12515, 37545, 42551, 127653, 212755, 638265]

約数ペア:

[(1, 638265), (3, 212755), (5, 127653), (15, 42551), (17, 37545), (51, 12515), (85, 7509), (255, 2503)]