20947983

素因数分解:

$3^1\times 7^1\times {\mathrm{701}}^1\times {\mathrm{1423}}^1$

素因数の和:2134

約数の個数: 16

約数和(自身を含む): 31988736

約数和(自身を除く): 11040753

約数列:

[1, 3, 7, 21, 701, 1423, 2103, 4269, 4907, 9961, 14721, 29883, 997523, 2992569, 6982661, 20947983]

約数ペア:

[(1, 20947983), (3, 6982661), (7, 2992569), (21, 997523), (701, 29883), (1423, 14721), (2103, 9961), (4269, 4907)]