20807468

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{12781}}^1$

素因数の和:12833

約数の個数: 24

約数和(自身を含む): 40800144

約数和(自身を除く): 19992676

約数列:

[1, 2, 4, 11, 22, 37, 44, 74, 148, 407, 814, 1628, 12781, 25562, 51124, 140591, 281182, 472897, 562364, 945794, 1891588, 5201867, 10403734, 20807468]

約数ペア:

[(1, 20807468), (2, 10403734), (4, 5201867), (11, 1891588), (22, 945794), (37, 562364), (44, 472897), (74, 281182), (148, 140591), (407, 51124), (814, 25562), (1628, 12781)]