20640844

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{32051}}^1$

素因数の和:32085

約数の個数: 24

約数和(自身を含む): 43077888

約数和(自身を除く): 22437044

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644, 32051, 64102, 128204, 224357, 448714, 737173, 897428, 1474346, 2948692, 5160211, 10320422, 20640844]

約数ペア:

[(1, 20640844), (2, 10320422), (4, 5160211), (7, 2948692), (14, 1474346), (23, 897428), (28, 737173), (46, 448714), (92, 224357), (161, 128204), (322, 64102), (644, 32051)]