28806561

素因数分解:

$3^2\times 7^2\times {\mathrm{83}}^1\times {\mathrm{787}}^1$

素因数の和:890

約数の個数: 36

約数和(自身を含む): 49048272

約数和(自身を除く): 20241711

約数列:

[1, 3, 7, 9, 21, 49, 63, 83, 147, 249, 441, 581, 747, 787, 1743, 2361, 4067, 5229, 5509, 7083, 12201, 16527, 36603, 38563, 49581, 65321, 115689, 195963, 347067, 457247, 587889, 1371741, 3200729, 4115223, 9602187, 28806561]

約数ペア:

[(1, 28806561), (3, 9602187), (7, 4115223), (9, 3200729), (21, 1371741), (49, 587889), (63, 457247), (83, 347067), (147, 195963), (249, 115689), (441, 65321), (581, 49581), (747, 38563), (787, 36603), (1743, 16527), (2361, 12201), (4067, 7083), (5229, 5509)]