20790328

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4649}}^1$

素因数の和:4711

約数の個数: 32

約数和(自身を含む): 42966000

約数和(自身を除く): 22175672

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 104, 172, 344, 559, 1118, 2236, 4472, 4649, 9298, 18596, 37192, 60437, 120874, 199907, 241748, 399814, 483496, 799628, 1599256, 2598791, 5197582, 10395164, 20790328]

約数ペア:

[(1, 20790328), (2, 10395164), (4, 5197582), (8, 2598791), (13, 1599256), (26, 799628), (43, 483496), (52, 399814), (86, 241748), (104, 199907), (172, 120874), (344, 60437), (559, 37192), (1118, 18596), (2236, 9298), (4472, 4649)]