28121373

素因数分解:

$3^2\times 7^1\times {\mathrm{349}}^1\times {\mathrm{1279}}^1$

素因数の和:1641

約数の個数: 24

約数和(自身を含む): 46592000

約数和(自身を除く): 18470627

約数列:

[1, 3, 7, 9, 21, 63, 349, 1047, 1279, 2443, 3141, 3837, 7329, 8953, 11511, 21987, 26859, 80577, 446371, 1339113, 3124597, 4017339, 9373791, 28121373]

約数ペア:

[(1, 28121373), (3, 9373791), (7, 4017339), (9, 3124597), (21, 1339113), (63, 446371), (349, 80577), (1047, 26859), (1279, 21987), (2443, 11511), (3141, 8953), (3837, 7329)]