20320783145

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4093}}^1\times {\mathrm{4493}}^1$

素因数の和:8621

約数の個数: 32

約数和(自身を含む): 27818435232

約数和(自身を除く): 7497652087

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 4093, 4493, 20465, 22465, 53209, 58409, 69581, 76381, 266045, 292045, 347905, 381905, 904553, 992953, 4522765, 4964765, 18389849, 91949245, 239068037, 312627433, 1195340185, 1563137165, 4064156629, 20320783145]

約数ペア:

[(1, 20320783145), (5, 4064156629), (13, 1563137165), (17, 1195340185), (65, 312627433), (85, 239068037), (221, 91949245), (1105, 18389849), (4093, 4964765), (4493, 4522765), (20465, 992953), (22465, 904553), (53209, 381905), (58409, 347905), (69581, 292045), (76381, 266045)]