28199997

素因数分解:

$3^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{5393}}^1$

素因数の和:5489

約数の個数: 24

約数和(自身を含む): 47121984

約数和(自身を除く): 18921987

約数列:

[1, 3, 7, 9, 21, 63, 83, 249, 581, 747, 1743, 5229, 5393, 16179, 37751, 48537, 113253, 339759, 447619, 1342857, 3133333, 4028571, 9399999, 28199997]

約数ペア:

[(1, 28199997), (3, 9399999), (7, 4028571), (9, 3133333), (21, 1342857), (63, 447619), (83, 339759), (249, 113253), (581, 48537), (747, 37751), (1743, 16179), (5229, 5393)]