20785524

素因数分解:

$2^2\times 3^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{509}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 50379840

約数和(自身を除く): 29594316

約数列:

[1, 2, 3, 4, 6, 12, 41, 82, 83, 123, 164, 166, 246, 249, 332, 492, 498, 509, 996, 1018, 1527, 2036, 3054, 3403, 6108, 6806, 10209, 13612, 20418, 20869, 40836, 41738, 42247, 62607, 83476, 84494, 125214, 126741, 168988, 250428, 253482, 506964, 1732127, 3464254, 5196381, 6928508, 10392762, 20785524]

約数ペア:

[(1, 20785524), (2, 10392762), (3, 6928508), (4, 5196381), (6, 3464254), (12, 1732127), (41, 506964), (82, 253482), (83, 250428), (123, 168988), (164, 126741), (166, 125214), (246, 84494), (249, 83476), (332, 62607), (492, 42247), (498, 41738), (509, 40836), (996, 20869), (1018, 20418), (1527, 13612), (2036, 10209), (3054, 6806), (3403, 6108)]