20842983

素因数分解:

$3^2\times 7^2\times {\mathrm{151}}^1\times {\mathrm{313}}^1$

素因数の和:484

約数の個数: 36

約数和(自身を含む): 35366448

約数和(自身を除く): 14523465

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 151, 313, 441, 453, 939, 1057, 1359, 2191, 2817, 3171, 6573, 7399, 9513, 15337, 19719, 22197, 46011, 47263, 66591, 138033, 141789, 330841, 425367, 992523, 2315887, 2977569, 6947661, 20842983]

約数ペア:

[(1, 20842983), (3, 6947661), (7, 2977569), (9, 2315887), (21, 992523), (49, 425367), (63, 330841), (147, 141789), (151, 138033), (313, 66591), (441, 47263), (453, 46011), (939, 22197), (1057, 19719), (1359, 15337), (2191, 9513), (2817, 7399), (3171, 6573)]