16647025

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:309

約数の個数: 24

約数和(自身を含む): 21483000

約数和(自身を除く): 4835975

約数列:

[1, 5, 25, 41, 109, 149, 205, 545, 745, 1025, 2725, 3725, 4469, 6109, 16241, 22345, 30545, 81205, 111725, 152725, 406025, 665881, 3329405, 16647025]

約数ペア:

[(1, 16647025), (5, 3329405), (25, 665881), (41, 406025), (109, 152725), (149, 111725), (205, 81205), (545, 30545), (745, 22345), (1025, 16241), (2725, 6109), (3725, 4469)]