28680140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{33349}}^1$

素因数の和:33401

約数の個数: 24

約数和(自身を含む): 61630800

約数和(自身を除く): 32950660

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 33349, 66698, 133396, 166745, 333490, 666980, 1434007, 2868014, 5736028, 7170035, 14340070, 28680140]

約数ペア:

[(1, 28680140), (2, 14340070), (4, 7170035), (5, 5736028), (10, 2868014), (20, 1434007), (43, 666980), (86, 333490), (172, 166745), (215, 133396), (430, 66698), (860, 33349)]