221168385

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{289109}}^1$

素因数の和:289137

約数の個数: 24

約数和(自身を含む): 405910440

約数和(自身を除く): 184742055

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 289109, 867327, 1445545, 2601981, 4336635, 4914853, 13009905, 14744559, 24574265, 44233677, 73722795, 221168385]

約数ペア:

[(1, 221168385), (3, 73722795), (5, 44233677), (9, 24574265), (15, 14744559), (17, 13009905), (45, 4914853), (51, 4336635), (85, 2601981), (153, 1445545), (255, 867327), (765, 289109)]