21282012

素因数分解:

$2^2\times 3^2\times {\mathrm{139}}^1\times {\mathrm{4253}}^1$

素因数の和:4402

約数の個数: 36

約数和(自身を含む): 54195960

約数和(自身を除く): 32913948

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 139, 278, 417, 556, 834, 1251, 1668, 2502, 4253, 5004, 8506, 12759, 17012, 25518, 38277, 51036, 76554, 153108, 591167, 1182334, 1773501, 2364668, 3547002, 5320503, 7094004, 10641006, 21282012]

約数ペア:

[(1, 21282012), (2, 10641006), (3, 7094004), (4, 5320503), (6, 3547002), (9, 2364668), (12, 1773501), (18, 1182334), (36, 591167), (139, 153108), (278, 76554), (417, 51036), (556, 38277), (834, 25518), (1251, 17012), (1668, 12759), (2502, 8506), (4253, 5004)]