28913997

素因数分解:

$3^1\times 7^1\times {\mathrm{997}}^1\times {\mathrm{1381}}^1$

素因数の和:2388

約数の個数: 16

約数和(自身を含む): 44135552

約数和(自身を除く): 15221555

約数列:

[1, 3, 7, 21, 997, 1381, 2991, 4143, 6979, 9667, 20937, 29001, 1376857, 4130571, 9637999, 28913997]

約数ペア:

[(1, 28913997), (3, 9637999), (7, 4130571), (21, 1376857), (997, 29001), (1381, 20937), (2991, 9667), (4143, 6979)]