20216075

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:236

約数の個数: 36

約数和(自身を含む): 28399224

約数和(自身を除く): 8183149

約数列:

[1, 5, 11, 25, 41, 55, 121, 163, 205, 275, 451, 605, 815, 1025, 1793, 2255, 3025, 4075, 4961, 6683, 8965, 11275, 19723, 24805, 33415, 44825, 73513, 98615, 124025, 167075, 367565, 493075, 808643, 1837825, 4043215, 20216075]

約数ペア:

[(1, 20216075), (5, 4043215), (11, 1837825), (25, 808643), (41, 493075), (55, 367565), (121, 167075), (163, 124025), (205, 98615), (275, 73513), (451, 44825), (605, 33415), (815, 24805), (1025, 19723), (1793, 11275), (2255, 8965), (3025, 6683), (4075, 4961)]