21028395

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{37889}}^1$

素因数の和:37934

約数の個数: 16

約数和(自身を含む): 34555680

約数和(自身を除く): 13527285

約数列:

[1, 3, 5, 15, 37, 111, 185, 555, 37889, 113667, 189445, 568335, 1401893, 4205679, 7009465, 21028395]

約数ペア:

[(1, 21028395), (3, 7009465), (5, 4205679), (15, 1401893), (37, 568335), (111, 189445), (185, 113667), (555, 37889)]