21700305

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4871}}^1$

素因数の和:4899

約数の個数: 40

約数和(自身を含む): 42444864

約数和(自身を除く): 20744559

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 165, 297, 405, 495, 891, 1485, 4455, 4871, 14613, 24355, 43839, 53581, 73065, 131517, 160743, 219195, 267905, 394551, 482229, 657585, 803715, 1446687, 1972755, 2411145, 4340061, 7233435, 21700305]

約数ペア:

[(1, 21700305), (3, 7233435), (5, 4340061), (9, 2411145), (11, 1972755), (15, 1446687), (27, 803715), (33, 657585), (45, 482229), (55, 394551), (81, 267905), (99, 219195), (135, 160743), (165, 131517), (297, 73065), (405, 53581), (495, 43839), (891, 24355), (1485, 14613), (4455, 4871)]