8239640

素因数分解:

$2^3\times 5^1\times {\mathrm{205991}}^1$

素因数の和:206002

約数の個数: 16

約数和(自身を含む): 18539280

約数和(自身を除く): 10299640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 205991, 411982, 823964, 1029955, 1647928, 2059910, 4119820, 8239640]

約数ペア:

[(1, 8239640), (2, 4119820), (4, 2059910), (5, 1647928), (8, 1029955), (10, 823964), (20, 411982), (40, 205991)]