247481493

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{431}}^1\times {\mathrm{739}}^1$

素因数の和:1217

約数の個数: 32

約数和(自身を含む): 388730880

約数和(自身を除く): 141249387

約数列:

[1, 3, 7, 21, 37, 111, 259, 431, 739, 777, 1293, 2217, 3017, 5173, 9051, 15519, 15947, 27343, 47841, 82029, 111629, 191401, 318509, 334887, 574203, 955527, 2229563, 6688689, 11784833, 35354499, 82493831, 247481493]

約数ペア:

[(1, 247481493), (3, 82493831), (7, 35354499), (21, 11784833), (37, 6688689), (111, 2229563), (259, 955527), (431, 574203), (739, 334887), (777, 318509), (1293, 191401), (2217, 111629), (3017, 82029), (5173, 47841), (9051, 27343), (15519, 15947)]