18078440

素因数分解:

$2^3\times 5^1\times {\mathrm{451961}}^1$

素因数の和:451972

約数の個数: 16

約数和(自身を含む): 40676580

約数和(自身を除く): 22598140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 451961, 903922, 1807844, 2259805, 3615688, 4519610, 9039220, 18078440]

約数ペア:

[(1, 18078440), (2, 9039220), (4, 4519610), (5, 3615688), (8, 2259805), (10, 1807844), (20, 903922), (40, 451961)]