20171281325

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{27091}}^1$

素因数の和:27222

約数の個数: 48

約数和(自身を含む): 28219027200

約数和(自身を除く): 8047745875

約数列:

[1, 5, 13, 25, 29, 65, 79, 145, 325, 377, 395, 725, 1027, 1885, 1975, 2291, 5135, 9425, 11455, 25675, 27091, 29783, 57275, 135455, 148915, 352183, 677275, 744575, 785639, 1760915, 2140189, 3928195, 8804575, 10213307, 10700945, 19640975, 27822457, 51066535, 53504725, 62065481, 139112285, 255332675, 310327405, 695561425, 806851253, 1551637025, 4034256265, 20171281325]

約数ペア:

[(1, 20171281325), (5, 4034256265), (13, 1551637025), (25, 806851253), (29, 695561425), (65, 310327405), (79, 255332675), (145, 139112285), (325, 62065481), (377, 53504725), (395, 51066535), (725, 27822457), (1027, 19640975), (1885, 10700945), (1975, 10213307), (2291, 8804575), (5135, 3928195), (9425, 2140189), (11455, 1760915), (25675, 785639), (27091, 744575), (29783, 677275), (57275, 352183), (135455, 148915)]