21200795

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1039}}^1$

素因数の和:1115

約数の個数: 32

約数和(自身を含む): 32348160

約数和(自身を除く): 11147365

約数列:

[1, 5, 7, 11, 35, 53, 55, 77, 265, 371, 385, 583, 1039, 1855, 2915, 4081, 5195, 7273, 11429, 20405, 36365, 55067, 57145, 80003, 275335, 385469, 400015, 605737, 1927345, 3028685, 4240159, 21200795]

約数ペア:

[(1, 21200795), (5, 4240159), (7, 3028685), (11, 1927345), (35, 605737), (53, 400015), (55, 385469), (77, 275335), (265, 80003), (371, 57145), (385, 55067), (583, 36365), (1039, 20405), (1855, 11429), (2915, 7273), (4081, 5195)]