20519994

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:267

約数の個数: 64

約数和(自身を含む): 47278080

約数和(自身を除く): 26758086

約数列:

[1, 2, 3, 6, 11, 22, 29, 33, 58, 66, 71, 87, 142, 151, 174, 213, 302, 319, 426, 453, 638, 781, 906, 957, 1562, 1661, 1914, 2059, 2343, 3322, 4118, 4379, 4686, 4983, 6177, 8758, 9966, 10721, 12354, 13137, 21442, 22649, 26274, 32163, 45298, 48169, 64326, 67947, 96338, 117931, 135894, 144507, 235862, 289014, 310909, 353793, 621818, 707586, 932727, 1865454, 3419999, 6839998, 10259997, 20519994]

約数ペア:

[(1, 20519994), (2, 10259997), (3, 6839998), (6, 3419999), (11, 1865454), (22, 932727), (29, 707586), (33, 621818), (58, 353793), (66, 310909), (71, 289014), (87, 235862), (142, 144507), (151, 135894), (174, 117931), (213, 96338), (302, 67947), (319, 64326), (426, 48169), (453, 45298), (638, 32163), (781, 26274), (906, 22649), (957, 21442), (1562, 13137), (1661, 12354), (1914, 10721), (2059, 9966), (2343, 8758), (3322, 6177), (4118, 4983), (4379, 4686)]