12890885

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{109}}^2$

素因数の和:261

約数の個数: 24

約数和(自身を含む): 18418176

約数和(自身を除く): 5527291

約数列:

[1, 5, 7, 31, 35, 109, 155, 217, 545, 763, 1085, 3379, 3815, 11881, 16895, 23653, 59405, 83167, 118265, 368311, 415835, 1841555, 2578177, 12890885]

約数ペア:

[(1, 12890885), (5, 2578177), (7, 1841555), (31, 415835), (35, 368311), (109, 118265), (155, 83167), (217, 59405), (545, 23653), (763, 16895), (1085, 11881), (3379, 3815)]