28367860

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{15937}}^1$

素因数の和:16035

約数の個数: 24

約数和(自身を含む): 60245640

約数和(自身を除く): 31877780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 15937, 31874, 63748, 79685, 159370, 318740, 1418393, 2836786, 5673572, 7091965, 14183930, 28367860]

約数ペア:

[(1, 28367860), (2, 14183930), (4, 7091965), (5, 5673572), (10, 2836786), (20, 1418393), (89, 318740), (178, 159370), (356, 79685), (445, 63748), (890, 31874), (1780, 15937)]