28202139

素因数分解:

$3^2\times 7^1\times {\mathrm{449}}^1\times {\mathrm{997}}^1$

素因数の和:1459

約数の個数: 24

約数和(自身を含む): 46706400

約数和(自身を除く): 18504261

約数列:

[1, 3, 7, 9, 21, 63, 449, 997, 1347, 2991, 3143, 4041, 6979, 8973, 9429, 20937, 28287, 62811, 447653, 1342959, 3133571, 4028877, 9400713, 28202139]

約数ペア:

[(1, 28202139), (3, 9400713), (7, 4028877), (9, 3133571), (21, 1342959), (63, 447653), (449, 62811), (997, 28287), (1347, 20937), (2991, 9429), (3143, 8973), (4041, 6979)]