21297241

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{739}}^1$

素因数の和:948

約数の個数: 16

約数和(自身を含む): 25574400

約数和(自身を除く): 4277159

約数列:

[1, 7, 23, 161, 179, 739, 1253, 4117, 5173, 16997, 28819, 118979, 132281, 925967, 3042463, 21297241]

約数ペア:

[(1, 21297241), (7, 3042463), (23, 925967), (161, 132281), (179, 118979), (739, 28819), (1253, 16997), (4117, 5173)]