19816785

素因数分解:

$3^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{811}}^1$

素因数の和:1006

約数の個数: 32

約数和(自身を含む): 35468160

約数和(自身を除く): 15651375

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 181, 543, 811, 905, 1629, 2433, 2715, 4055, 4887, 7299, 8145, 12165, 21897, 24435, 36495, 109485, 146791, 440373, 733955, 1321119, 2201865, 3963357, 6605595, 19816785]

約数ペア:

[(1, 19816785), (3, 6605595), (5, 3963357), (9, 2201865), (15, 1321119), (27, 733955), (45, 440373), (135, 146791), (181, 109485), (543, 36495), (811, 24435), (905, 21897), (1629, 12165), (2433, 8145), (2715, 7299), (4055, 4887)]