19998891

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{8783}}^1$

素因数の和:8823

約数の個数: 24

約数和(自身を含む): 32887296

約数和(自身を除く): 12888405

約数列:

[1, 3, 9, 11, 23, 33, 69, 99, 207, 253, 759, 2277, 8783, 26349, 79047, 96613, 202009, 289839, 606027, 869517, 1818081, 2222099, 6666297, 19998891]

約数ペア:

[(1, 19998891), (3, 6666297), (9, 2222099), (11, 1818081), (23, 869517), (33, 606027), (69, 289839), (99, 202009), (207, 96613), (253, 79047), (759, 26349), (2277, 8783)]