21740355

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5309}}^1$

素因数の和:5340

約数の個数: 48

約数和(自身を含む): 46388160

約数和(自身を除く): 24647805

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 195, 273, 315, 455, 585, 819, 1365, 4095, 5309, 15927, 26545, 37163, 47781, 69017, 79635, 111489, 185815, 207051, 238905, 334467, 345085, 483119, 557445, 621153, 1035255, 1449357, 1672335, 2415595, 3105765, 4348071, 7246785, 21740355]

約数ペア:

[(1, 21740355), (3, 7246785), (5, 4348071), (7, 3105765), (9, 2415595), (13, 1672335), (15, 1449357), (21, 1035255), (35, 621153), (39, 557445), (45, 483119), (63, 345085), (65, 334467), (91, 238905), (105, 207051), (117, 185815), (195, 111489), (273, 79635), (315, 69017), (455, 47781), (585, 37163), (819, 26545), (1365, 15927), (4095, 5309)]