20801628

素因数分解:

$2^2\times 3^2\times {\mathrm{139}}^1\times {\mathrm{4157}}^1$

素因数の和:4306

約数の個数: 36

約数和(自身を含む): 52972920

約数和(自身を除く): 32171292

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 139, 278, 417, 556, 834, 1251, 1668, 2502, 4157, 5004, 8314, 12471, 16628, 24942, 37413, 49884, 74826, 149652, 577823, 1155646, 1733469, 2311292, 3466938, 5200407, 6933876, 10400814, 20801628]

約数ペア:

[(1, 20801628), (2, 10400814), (3, 6933876), (4, 5200407), (6, 3466938), (9, 2311292), (12, 1733469), (18, 1155646), (36, 577823), (139, 149652), (278, 74826), (417, 49884), (556, 37413), (834, 24942), (1251, 16628), (1668, 12471), (2502, 8314), (4157, 5004)]