21718000

素因数分解:

$2^4\times 5^3\times {\mathrm{10859}}^1$

素因数の和:10882

約数の個数: 40

約数和(自身を含む): 52518960

約数和(自身を除く): 30800960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 10859, 21718, 43436, 54295, 86872, 108590, 173744, 217180, 271475, 434360, 542950, 868720, 1085900, 1357375, 2171800, 2714750, 4343600, 5429500, 10859000, 21718000]

約数ペア:

[(1, 21718000), (2, 10859000), (4, 5429500), (5, 4343600), (8, 2714750), (10, 2171800), (16, 1357375), (20, 1085900), (25, 868720), (40, 542950), (50, 434360), (80, 271475), (100, 217180), (125, 173744), (200, 108590), (250, 86872), (400, 54295), (500, 43436), (1000, 21718), (2000, 10859)]