2163987

素因数分解:

$3^2\times 7^3\times {\mathrm{701}}^1$

素因数の和:728

約数の個数: 24

約数和(自身を含む): 3650400

約数和(自身を除く): 1486413

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 701, 1029, 2103, 3087, 4907, 6309, 14721, 34349, 44163, 103047, 240443, 309141, 721329, 2163987]

約数ペア:

[(1, 2163987), (3, 721329), (7, 309141), (9, 240443), (21, 103047), (49, 44163), (63, 34349), (147, 14721), (343, 6309), (441, 4907), (701, 3087), (1029, 2103)]