51261987

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{281}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 85642272

約数和(自身を除く): 34380285

約数列:

[1, 3, 7, 17, 21, 49, 51, 73, 119, 147, 219, 281, 357, 511, 833, 843, 1241, 1533, 1967, 2499, 3577, 3723, 4777, 5901, 8687, 10731, 13769, 14331, 20513, 26061, 33439, 41307, 60809, 61539, 100317, 143591, 182427, 234073, 348721, 430773, 702219, 1005137, 1046163, 2441047, 3015411, 7323141, 17087329, 51261987]

約数ペア:

[(1, 51261987), (3, 17087329), (7, 7323141), (17, 3015411), (21, 2441047), (49, 1046163), (51, 1005137), (73, 702219), (119, 430773), (147, 348721), (219, 234073), (281, 182427), (357, 143591), (511, 100317), (833, 61539), (843, 60809), (1241, 41307), (1533, 33439), (1967, 26061), (2499, 20513), (3577, 14331), (3723, 13769), (4777, 10731), (5901, 8687)]