20664436

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{1511}}^1$

素因数の和:1791

約数の個数: 24

約数和(自身を含む): 39118464

約数和(自身を除く): 18454028

約数列:

[1, 2, 4, 13, 26, 52, 263, 526, 1052, 1511, 3022, 3419, 6044, 6838, 13676, 19643, 39286, 78572, 397393, 794786, 1589572, 5166109, 10332218, 20664436]

約数ペア:

[(1, 20664436), (2, 10332218), (4, 5166109), (13, 1589572), (26, 794786), (52, 397393), (263, 78572), (526, 39286), (1052, 19643), (1511, 13676), (3022, 6838), (3419, 6044)]