21062888

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1103}}^1$

素因数の和:1158

約数の個数: 64

約数和(自身を含む): 50872320

約数和(自身を除く): 29809432

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 31, 44, 56, 62, 77, 88, 124, 154, 217, 248, 308, 341, 434, 616, 682, 868, 1103, 1364, 1736, 2206, 2387, 2728, 4412, 4774, 7721, 8824, 9548, 12133, 15442, 19096, 24266, 30884, 34193, 48532, 61768, 68386, 84931, 97064, 136772, 169862, 239351, 273544, 339724, 376123, 478702, 679448, 752246, 957404, 1504492, 1914808, 2632861, 3008984, 5265722, 10531444, 21062888]

約数ペア:

[(1, 21062888), (2, 10531444), (4, 5265722), (7, 3008984), (8, 2632861), (11, 1914808), (14, 1504492), (22, 957404), (28, 752246), (31, 679448), (44, 478702), (56, 376123), (62, 339724), (77, 273544), (88, 239351), (124, 169862), (154, 136772), (217, 97064), (248, 84931), (308, 68386), (341, 61768), (434, 48532), (616, 34193), (682, 30884), (868, 24266), (1103, 19096), (1364, 15442), (1736, 12133), (2206, 9548), (2387, 8824), (2728, 7721), (4412, 4774)]