21128924

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{367}}^1\times {\mathrm{389}}^1$

素因数の和:797

約数の個数: 24

約数和(自身を含む): 38176320

約数和(自身を除く): 17047396

約数列:

[1, 2, 4, 37, 74, 148, 367, 389, 734, 778, 1468, 1556, 13579, 14393, 27158, 28786, 54316, 57572, 142763, 285526, 571052, 5282231, 10564462, 21128924]

約数ペア:

[(1, 21128924), (2, 10564462), (4, 5282231), (37, 571052), (74, 285526), (148, 142763), (367, 57572), (389, 54316), (734, 28786), (778, 27158), (1468, 14393), (1556, 13579)]