20970716

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{3769}}^1$

素因数の和:3893

約数の個数: 24

約数和(自身を含む): 39901680

約数和(自身を除く): 18930964

約数列:

[1, 2, 4, 13, 26, 52, 107, 214, 428, 1391, 2782, 3769, 5564, 7538, 15076, 48997, 97994, 195988, 403283, 806566, 1613132, 5242679, 10485358, 20970716]

約数ペア:

[(1, 20970716), (2, 10485358), (4, 5242679), (13, 1613132), (26, 806566), (52, 403283), (107, 195988), (214, 97994), (428, 48997), (1391, 15076), (2782, 7538), (3769, 5564)]