20401983

素因数分解:

$3^3\times 7^3\times {\mathrm{2203}}^1$

素因数の和:2233

約数の個数: 32

約数和(自身を含む): 35264000

約数和(自身を除く): 14862017

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 343, 441, 1029, 1323, 2203, 3087, 6609, 9261, 15421, 19827, 46263, 59481, 107947, 138789, 323841, 416367, 755629, 971523, 2266887, 2914569, 6800661, 20401983]

約数ペア:

[(1, 20401983), (3, 6800661), (7, 2914569), (9, 2266887), (21, 971523), (27, 755629), (49, 416367), (63, 323841), (147, 138789), (189, 107947), (343, 59481), (441, 46263), (1029, 19827), (1323, 15421), (2203, 9261), (3087, 6609)]