28142780

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{5231}}^1$

素因数の和:5509

約数の個数: 24

約数和(自身を含む): 59330880

約数和(自身を除く): 31188100

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 5231, 5380, 10462, 20924, 26155, 52310, 104620, 1407139, 2814278, 5628556, 7035695, 14071390, 28142780]

約数ペア:

[(1, 28142780), (2, 14071390), (4, 7035695), (5, 5628556), (10, 2814278), (20, 1407139), (269, 104620), (538, 52310), (1076, 26155), (1345, 20924), (2690, 10462), (5231, 5380)]