21134320

素因数分解:

$2^4\times 5^1\times {\mathrm{264179}}^1$

素因数の和:264192

約数の個数: 20

約数和(自身を含む): 49137480

約数和(自身を除く): 28003160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 264179, 528358, 1056716, 1320895, 2113432, 2641790, 4226864, 5283580, 10567160, 21134320]

約数ペア:

[(1, 21134320), (2, 10567160), (4, 5283580), (5, 4226864), (8, 2641790), (10, 2113432), (16, 1320895), (20, 1056716), (40, 528358), (80, 264179)]