20400057

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{709}}^1$

素因数の和:877

約数の個数: 24

約数和(自身を含む): 31012800

約数和(自身を除く): 10612743

約数列:

[1, 3, 9, 23, 69, 139, 207, 417, 709, 1251, 2127, 3197, 6381, 9591, 16307, 28773, 48921, 98551, 146763, 295653, 886959, 2266673, 6800019, 20400057]

約数ペア:

[(1, 20400057), (3, 6800019), (9, 2266673), (23, 886959), (69, 295653), (139, 146763), (207, 98551), (417, 48921), (709, 28773), (1251, 16307), (2127, 9591), (3197, 6381)]