28688505

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{51691}}^1$

素因数の和:51736

約数の個数: 16

約数和(自身を含む): 47143104

約数和(自身を除く): 18454599

約数列:

[1, 3, 5, 15, 37, 111, 185, 555, 51691, 155073, 258455, 775365, 1912567, 5737701, 9562835, 28688505]

約数ペア:

[(1, 28688505), (3, 9562835), (5, 5737701), (15, 1912567), (37, 775365), (111, 258455), (185, 155073), (555, 51691)]