19880042

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5749}}^1$

素因数の和:5790

約数の個数: 32

約数和(自身を含む): 38640000

約数和(自身を除く): 18759958

約数列:

[1, 2, 7, 13, 14, 19, 26, 38, 91, 133, 182, 247, 266, 494, 1729, 3458, 5749, 11498, 40243, 74737, 80486, 109231, 149474, 218462, 523159, 764617, 1046318, 1420003, 1529234, 2840006, 9940021, 19880042]

約数ペア:

[(1, 19880042), (2, 9940021), (7, 2840006), (13, 1529234), (14, 1420003), (19, 1046318), (26, 764617), (38, 523159), (91, 218462), (133, 149474), (182, 109231), (247, 80486), (266, 74737), (494, 40243), (1729, 11498), (3458, 5749)]