21782000

素因数分解:

$2^4\times 5^3\times {\mathrm{10891}}^1$

素因数の和:10914

約数の個数: 40

約数和(自身を含む): 52673712

約数和(自身を除く): 30891712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 10891, 21782, 43564, 54455, 87128, 108910, 174256, 217820, 272275, 435640, 544550, 871280, 1089100, 1361375, 2178200, 2722750, 4356400, 5445500, 10891000, 21782000]

約数ペア:

[(1, 21782000), (2, 10891000), (4, 5445500), (5, 4356400), (8, 2722750), (10, 2178200), (16, 1361375), (20, 1089100), (25, 871280), (40, 544550), (50, 435640), (80, 272275), (100, 217820), (125, 174256), (200, 108910), (250, 87128), (400, 54455), (500, 43564), (1000, 21782), (2000, 10891)]