21250645

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{17207}}^1$

素因数の和:17244

約数の個数: 16

約数和(自身を含む): 28909440

約数和(自身を除く): 7658795

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 17207, 86035, 223691, 326933, 1118455, 1634665, 4250129, 21250645]

約数ペア:

[(1, 21250645), (5, 4250129), (13, 1634665), (19, 1118455), (65, 326933), (95, 223691), (247, 86035), (1235, 17207)]