20758180

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{4919}}^1$

素因数の和:5139

約数の個数: 24

約数和(自身を含む): 43807680

約数和(自身を除く): 23049500

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 4919, 9838, 19676, 24595, 49190, 98380, 1037909, 2075818, 4151636, 5189545, 10379090, 20758180]

約数ペア:

[(1, 20758180), (2, 10379090), (4, 5189545), (5, 4151636), (10, 2075818), (20, 1037909), (211, 98380), (422, 49190), (844, 24595), (1055, 19676), (2110, 9838), (4220, 4919)]