28720815

素因数分解:

$3^1\times 5^1\times {\mathrm{773}}^1\times {\mathrm{2477}}^1$

素因数の和:3258

約数の個数: 16

約数和(自身を含む): 46031328

約数和(自身を除く): 17310513

約数列:

[1, 3, 5, 15, 773, 2319, 2477, 3865, 7431, 11595, 12385, 37155, 1914721, 5744163, 9573605, 28720815]

約数ペア:

[(1, 28720815), (3, 9573605), (5, 5744163), (15, 1914721), (773, 37155), (2319, 12385), (2477, 11595), (3865, 7431)]