20895609

素因数分解:

$3^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{3467}}^1$

素因数の和:3525

約数の個数: 24

約数和(自身を含む): 33209568

約数和(自身を除く): 12313959

約数列:

[1, 3, 7, 21, 41, 49, 123, 147, 287, 861, 2009, 3467, 6027, 10401, 24269, 72807, 142147, 169883, 426441, 509649, 995029, 2985087, 6965203, 20895609]

約数ペア:

[(1, 20895609), (3, 6965203), (7, 2985087), (21, 995029), (41, 509649), (49, 426441), (123, 169883), (147, 142147), (287, 72807), (861, 24269), (2009, 10401), (3467, 6027)]