18915065

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{733}}^1$

素因数の和:1148

約数の個数: 16

約数和(自身を含む): 24539088

約数和(自身を除く): 5624023

約数列:

[1, 5, 13, 65, 397, 733, 1985, 3665, 5161, 9529, 25805, 47645, 291001, 1455005, 3783013, 18915065]

約数ペア:

[(1, 18915065), (5, 3783013), (13, 1455005), (65, 291001), (397, 47645), (733, 25805), (1985, 9529), (3665, 5161)]