20907972

素因数分解:

$2^2\times 3^2\times {\mathrm{389}}^1\times {\mathrm{1493}}^1$

素因数の和:1892

約数の個数: 36

約数和(自身を含む): 53022060

約数和(自身を除く): 32114088

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 389, 778, 1167, 1493, 1556, 2334, 2986, 3501, 4479, 4668, 5972, 7002, 8958, 13437, 14004, 17916, 26874, 53748, 580777, 1161554, 1742331, 2323108, 3484662, 5226993, 6969324, 10453986, 20907972]

約数ペア:

[(1, 20907972), (2, 10453986), (3, 6969324), (4, 5226993), (6, 3484662), (9, 2323108), (12, 1742331), (18, 1161554), (36, 580777), (389, 53748), (778, 26874), (1167, 17916), (1493, 14004), (1556, 13437), (2334, 8958), (2986, 7002), (3501, 5972), (4479, 4668)]