19966075

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{431}}^1$

素因数の和:567

約数の個数: 24

約数和(自身を含む): 26516160

約数和(自身を除く): 6550085

約数列:

[1, 5, 17, 25, 85, 109, 425, 431, 545, 1853, 2155, 2725, 7327, 9265, 10775, 36635, 46325, 46979, 183175, 234895, 798643, 1174475, 3993215, 19966075]

約数ペア:

[(1, 19966075), (5, 3993215), (17, 1174475), (25, 798643), (85, 234895), (109, 183175), (425, 46979), (431, 46325), (545, 36635), (1853, 10775), (2155, 9265), (2725, 7327)]