21218906

素因数分解:

$2^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1\times {\mathrm{601}}^1$

素因数の和:869

約数の個数: 16

約数和(自身を含む): 32363520

約数和(自身を除く): 11144614

約数列:

[1, 2, 127, 139, 254, 278, 601, 1202, 17653, 35306, 76327, 83539, 152654, 167078, 10609453, 21218906]

約数ペア:

[(1, 21218906), (2, 10609453), (127, 167078), (139, 152654), (254, 83539), (278, 76327), (601, 35306), (1202, 17653)]