20687849

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{691}}^1$

素因数の和:765

約数の個数: 24

約数和(自身を含む): 26506368

約数和(自身を除く): 5818519

約数列:

[1, 7, 13, 47, 49, 91, 329, 611, 637, 691, 2303, 4277, 4837, 8983, 29939, 32477, 33859, 62881, 227339, 422201, 440167, 1591373, 2955407, 20687849]

約数ペア:

[(1, 20687849), (7, 2955407), (13, 1591373), (47, 440167), (49, 422201), (91, 227339), (329, 62881), (611, 33859), (637, 32477), (691, 29939), (2303, 8983), (4277, 4837)]