21608795

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{17497}}^1$

素因数の和:17534

約数の個数: 16

約数和(自身を含む): 29396640

約数和(自身を除く): 7787845

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 17497, 87485, 227461, 332443, 1137305, 1662215, 4321759, 21608795]

約数ペア:

[(1, 21608795), (5, 4321759), (13, 1662215), (19, 1137305), (65, 332443), (95, 227461), (247, 87485), (1235, 17497)]