28261900

素因数分解:

$2^2\times 5^2\times {\mathrm{409}}^1\times {\mathrm{691}}^1$

素因数の和:1114

約数の個数: 36

約数和(自身を含む): 61567240

約数和(自身を除く): 33305340

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 409, 691, 818, 1382, 1636, 2045, 2764, 3455, 4090, 6910, 8180, 10225, 13820, 17275, 20450, 34550, 40900, 69100, 282619, 565238, 1130476, 1413095, 2826190, 5652380, 7065475, 14130950, 28261900]

約数ペア:

[(1, 28261900), (2, 14130950), (4, 7065475), (5, 5652380), (10, 2826190), (20, 1413095), (25, 1130476), (50, 565238), (100, 282619), (409, 69100), (691, 40900), (818, 34550), (1382, 20450), (1636, 17275), (2045, 13820), (2764, 10225), (3455, 8180), (4090, 6910)]