20177362840

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8269411}}^1$

素因数の和:8269483

約数の個数: 32

約数和(自身を含む): 46143318960

約数和(自身を除く): 25965956120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 8269411, 16538822, 33077644, 41347055, 66155288, 82694110, 165388220, 330776440, 504434071, 1008868142, 2017736284, 2522170355, 4035472568, 5044340710, 10088681420, 20177362840]

約数ペア:

[(1, 20177362840), (2, 10088681420), (4, 5044340710), (5, 4035472568), (8, 2522170355), (10, 2017736284), (20, 1008868142), (40, 504434071), (61, 330776440), (122, 165388220), (244, 82694110), (305, 66155288), (488, 41347055), (610, 33077644), (1220, 16538822), (2440, 8269411)]