20916972

素因数分解:

$2^2\times 3^2\times {\mathrm{479}}^1\times {\mathrm{1213}}^1$

素因数の和:1702

約数の個数: 36

約数和(自身を含む): 53027520

約数和(自身を除く): 32110548

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 479, 958, 1213, 1437, 1916, 2426, 2874, 3639, 4311, 4852, 5748, 7278, 8622, 10917, 14556, 17244, 21834, 43668, 581027, 1162054, 1743081, 2324108, 3486162, 5229243, 6972324, 10458486, 20916972]

約数ペア:

[(1, 20916972), (2, 10458486), (3, 6972324), (4, 5229243), (6, 3486162), (9, 2324108), (12, 1743081), (18, 1162054), (36, 581027), (479, 43668), (958, 21834), (1213, 17244), (1437, 14556), (1916, 10917), (2426, 8622), (2874, 7278), (3639, 5748), (4311, 4852)]