20268451

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2\times {\mathrm{131}}^1$

素因数の和:223

約数の個数: 24

約数和(自身を含む): 25166592

約数和(自身を除く): 4898141

約数列:

[1, 7, 23, 31, 131, 161, 217, 713, 917, 961, 3013, 4061, 4991, 6727, 21091, 22103, 28427, 93403, 125891, 154721, 653821, 881237, 2895493, 20268451]

約数ペア:

[(1, 20268451), (7, 2895493), (23, 881237), (31, 653821), (131, 154721), (161, 125891), (217, 93403), (713, 28427), (917, 22103), (961, 21091), (3013, 6727), (4061, 4991)]