20580756

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{491}}^1\times {\mathrm{499}}^1$

素因数の和:1004

約数の個数: 48

約数和(自身を含む): 55104000

約数和(自身を除く): 34523244

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 491, 499, 982, 998, 1473, 1497, 1964, 1996, 2946, 2994, 3437, 3493, 5892, 5988, 6874, 6986, 10311, 10479, 13748, 13972, 20622, 20958, 41244, 41916, 245009, 490018, 735027, 980036, 1470054, 1715063, 2940108, 3430126, 5145189, 6860252, 10290378, 20580756]

約数ペア:

[(1, 20580756), (2, 10290378), (3, 6860252), (4, 5145189), (6, 3430126), (7, 2940108), (12, 1715063), (14, 1470054), (21, 980036), (28, 735027), (42, 490018), (84, 245009), (491, 41916), (499, 41244), (982, 20958), (998, 20622), (1473, 13972), (1497, 13748), (1964, 10479), (1996, 10311), (2946, 6986), (2994, 6874), (3437, 5988), (3493, 5892)]