20720812

素因数分解:

$2^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{5827}}^1$

素因数の和:5965

約数の個数: 24

約数和(自身を含む): 41775104

約数和(自身を除く): 21054292

約数列:

[1, 2, 4, 7, 14, 28, 127, 254, 508, 889, 1778, 3556, 5827, 11654, 23308, 40789, 81578, 163156, 740029, 1480058, 2960116, 5180203, 10360406, 20720812]

約数ペア:

[(1, 20720812), (2, 10360406), (4, 5180203), (7, 2960116), (14, 1480058), (28, 740029), (127, 163156), (254, 81578), (508, 40789), (889, 23308), (1778, 11654), (3556, 5827)]