28016980

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{3191}}^1$

素因数の和:3639

約数の個数: 24

約数和(自身を含む): 58988160

約数和(自身を除く): 30971180

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 3191, 4390, 6382, 8780, 12764, 15955, 31910, 63820, 1400849, 2801698, 5603396, 7004245, 14008490, 28016980]

約数ペア:

[(1, 28016980), (2, 14008490), (4, 7004245), (5, 5603396), (10, 2801698), (20, 1400849), (439, 63820), (878, 31910), (1756, 15955), (2195, 12764), (3191, 8780), (4390, 6382)]