20787425

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{409}}^1$

素因数の和:545

約数の個数: 24

約数和(自身を含む): 27453600

約数和(自身を除く): 6666175

約数列:

[1, 5, 19, 25, 95, 107, 409, 475, 535, 2033, 2045, 2675, 7771, 10165, 10225, 38855, 43763, 50825, 194275, 218815, 831497, 1094075, 4157485, 20787425]

約数ペア:

[(1, 20787425), (5, 4157485), (19, 1094075), (25, 831497), (95, 218815), (107, 194275), (409, 50825), (475, 43763), (535, 38855), (2033, 10225), (2045, 10165), (2675, 7771)]