28143800

素因数分解:

$2^3\times 5^2\times {\mathrm{109}}^1\times {\mathrm{1291}}^1$

素因数の和:1416

約数の個数: 48

約数和(自身を含む): 66085800

約数和(自身を除く): 37942000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 109, 200, 218, 436, 545, 872, 1090, 1291, 2180, 2582, 2725, 4360, 5164, 5450, 6455, 10328, 10900, 12910, 21800, 25820, 32275, 51640, 64550, 129100, 140719, 258200, 281438, 562876, 703595, 1125752, 1407190, 2814380, 3517975, 5628760, 7035950, 14071900, 28143800]

約数ペア:

[(1, 28143800), (2, 14071900), (4, 7035950), (5, 5628760), (8, 3517975), (10, 2814380), (20, 1407190), (25, 1125752), (40, 703595), (50, 562876), (100, 281438), (109, 258200), (200, 140719), (218, 129100), (436, 64550), (545, 51640), (872, 32275), (1090, 25820), (1291, 21800), (2180, 12910), (2582, 10900), (2725, 10328), (4360, 6455), (5164, 5450)]