18918965

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{15319}}^1$

素因数の和:15356

約数の個数: 16

約数和(自身を含む): 25737600

約数和(自身を除く): 6818635

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 15319, 76595, 199147, 291061, 995735, 1455305, 3783793, 18918965]

約数ペア:

[(1, 18918965), (5, 3783793), (13, 1455305), (19, 995735), (65, 291061), (95, 199147), (247, 76595), (1235, 15319)]