21617800

素因数分解:

$2^3\times 5^2\times {\mathrm{108089}}^1$

素因数の和:108105

約数の個数: 24

約数和(自身を含む): 50261850

約数和(自身を除く): 28644050

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 108089, 216178, 432356, 540445, 864712, 1080890, 2161780, 2702225, 4323560, 5404450, 10808900, 21617800]

約数ペア:

[(1, 21617800), (2, 10808900), (4, 5404450), (5, 4323560), (8, 2702225), (10, 2161780), (20, 1080890), (25, 864712), (40, 540445), (50, 432356), (100, 216178), (200, 108089)]