20801825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1129}}^1$

素因数の和:1217

約数の個数: 24

約数和(自身を含む): 28584480

約数和(自身を除く): 7782655

約数列:

[1, 5, 11, 25, 55, 67, 275, 335, 737, 1129, 1675, 3685, 5645, 12419, 18425, 28225, 62095, 75643, 310475, 378215, 832073, 1891075, 4160365, 20801825]

約数ペア:

[(1, 20801825), (5, 4160365), (11, 1891075), (25, 832073), (55, 378215), (67, 310475), (275, 75643), (335, 62095), (737, 28225), (1129, 18425), (1675, 12419), (3685, 5645)]