21656268

素因数分解:

$2^2\times 3^3\times {\mathrm{239}}^1\times {\mathrm{839}}^1$

素因数の和:1091

約数の個数: 48

約数和(自身を含む): 56448000

約数和(自身を除く): 34791732

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 239, 478, 717, 839, 956, 1434, 1678, 2151, 2517, 2868, 3356, 4302, 5034, 6453, 7551, 8604, 10068, 12906, 15102, 22653, 25812, 30204, 45306, 90612, 200521, 401042, 601563, 802084, 1203126, 1804689, 2406252, 3609378, 5414067, 7218756, 10828134, 21656268]

約数ペア:

[(1, 21656268), (2, 10828134), (3, 7218756), (4, 5414067), (6, 3609378), (9, 2406252), (12, 1804689), (18, 1203126), (27, 802084), (36, 601563), (54, 401042), (108, 200521), (239, 90612), (478, 45306), (717, 30204), (839, 25812), (956, 22653), (1434, 15102), (1678, 12906), (2151, 10068), (2517, 8604), (2868, 7551), (3356, 6453), (4302, 5034)]