20806020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{115589}}^1$

素因数の和:115604

約数の個数: 36

約数和(自身を含む): 63112140

約数和(自身を除く): 42306120

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 115589, 231178, 346767, 462356, 577945, 693534, 1040301, 1155890, 1387068, 1733835, 2080602, 2311780, 3467670, 4161204, 5201505, 6935340, 10403010, 20806020]

約数ペア:

[(1, 20806020), (2, 10403010), (3, 6935340), (4, 5201505), (5, 4161204), (6, 3467670), (9, 2311780), (10, 2080602), (12, 1733835), (15, 1387068), (18, 1155890), (20, 1040301), (30, 693534), (36, 577945), (45, 462356), (60, 346767), (90, 231178), (180, 115589)]