18974907

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{2531}}^1$

素因数の和:2568

約数の個数: 36

約数和(自身を含む): 33771816

約数和(自身を除く): 14796909

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 63, 119, 147, 153, 357, 441, 833, 1071, 2499, 2531, 7497, 7593, 17717, 22779, 43027, 53151, 124019, 129081, 159453, 301189, 372057, 387243, 903567, 1116171, 2108323, 2710701, 6324969, 18974907]

約数ペア:

[(1, 18974907), (3, 6324969), (7, 2710701), (9, 2108323), (17, 1116171), (21, 903567), (49, 387243), (51, 372057), (63, 301189), (119, 159453), (147, 129081), (153, 124019), (357, 53151), (441, 43027), (833, 22779), (1071, 17717), (2499, 7593), (2531, 7497)]