21058037

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:333

約数の個数: 32

約数和(自身を含む): 28680960

約数和(自身を除く): 7622923

約数列:

[1, 7, 11, 13, 77, 91, 109, 143, 193, 763, 1001, 1199, 1351, 1417, 2123, 2509, 8393, 9919, 14861, 15587, 17563, 21037, 27599, 109109, 147259, 193193, 231407, 273481, 1619849, 1914367, 3008291, 21058037]

約数ペア:

[(1, 21058037), (7, 3008291), (11, 1914367), (13, 1619849), (77, 273481), (91, 231407), (109, 193193), (143, 147259), (193, 109109), (763, 27599), (1001, 21037), (1199, 17563), (1351, 15587), (1417, 14861), (2123, 9919), (2509, 8393)]