257547981

素因数分解:

$3^1\times {\mathrm{157}}^1\times {\mathrm{313}}^1\times {\mathrm{1747}}^1$

素因数の和:2220

約数の個数: 16

約数和(自身を含む): 346887104

約数和(自身を除く): 89339123

約数列:

[1, 3, 157, 313, 471, 939, 1747, 5241, 49141, 147423, 274279, 546811, 822837, 1640433, 85849327, 257547981]

約数ペア:

[(1, 257547981), (3, 85849327), (157, 1640433), (313, 822837), (471, 546811), (939, 274279), (1747, 147423), (5241, 49141)]