54963640

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{2137}}^1$

素因数の和:2791

約数の個数: 32

約数和(自身を含む): 123918480

約数和(自身を除く): 68954840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2137, 2572, 3215, 4274, 5144, 6430, 8548, 10685, 12860, 17096, 21370, 25720, 42740, 85480, 1374091, 2748182, 5496364, 6870455, 10992728, 13740910, 27481820, 54963640]

約数ペア:

[(1, 54963640), (2, 27481820), (4, 13740910), (5, 10992728), (8, 6870455), (10, 5496364), (20, 2748182), (40, 1374091), (643, 85480), (1286, 42740), (2137, 25720), (2572, 21370), (3215, 17096), (4274, 12860), (5144, 10685), (6430, 8548)]