551205

素因数分解:

$3^4\times 5^1\times {\mathrm{1361}}^1$

素因数の和:1378

約数の個数: 20

約数和(自身を含む): 988812

約数和(自身を除く): 437607

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 1361, 4083, 6805, 12249, 20415, 36747, 61245, 110241, 183735, 551205]

約数ペア:

[(1, 551205), (3, 183735), (5, 110241), (9, 61245), (15, 36747), (27, 20415), (45, 12249), (81, 6805), (135, 4083), (405, 1361)]