21744485

素因数分解:

$5^1\times 7^3\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:466

約数の個数: 32

約数和(自身を含む): 31488000

約数和(自身を除く): 9743515

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 343, 409, 1085, 1519, 1715, 2045, 2863, 7595, 10633, 12679, 14315, 20041, 53165, 63395, 88753, 100205, 140287, 443765, 621271, 701435, 3106355, 4348897, 21744485]

約数ペア:

[(1, 21744485), (5, 4348897), (7, 3106355), (31, 701435), (35, 621271), (49, 443765), (155, 140287), (217, 100205), (245, 88753), (343, 63395), (409, 53165), (1085, 20041), (1519, 14315), (1715, 12679), (2045, 10633), (2863, 7595)]