20257887293

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{25603}}^1$

素因数の和:25797

約数の個数: 32

約数和(自身を含む): 25145176320

約数和(自身を除く): 4887289027

約数列:

[1, 7, 17, 61, 109, 119, 427, 763, 1037, 1853, 6649, 7259, 12971, 25603, 46543, 113033, 179221, 435251, 791231, 1561783, 2790727, 3046757, 10932481, 19535089, 26550311, 47442359, 170234347, 185852177, 332096513, 1191640429, 2893983899, 20257887293]

約数ペア:

[(1, 20257887293), (7, 2893983899), (17, 1191640429), (61, 332096513), (109, 185852177), (119, 170234347), (427, 47442359), (763, 26550311), (1037, 19535089), (1853, 10932481), (6649, 3046757), (7259, 2790727), (12971, 1561783), (25603, 791231), (46543, 435251), (113033, 179221)]