20391678

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{27631}}^1$

素因数の和:27680

約数の個数: 24

約数和(自身を含む): 45261216

約数和(自身を除く): 24869538

約数列:

[1, 2, 3, 6, 9, 18, 41, 82, 123, 246, 369, 738, 27631, 55262, 82893, 165786, 248679, 497358, 1132871, 2265742, 3398613, 6797226, 10195839, 20391678]

約数ペア:

[(1, 20391678), (2, 10195839), (3, 6797226), (6, 3398613), (9, 2265742), (18, 1132871), (41, 497358), (82, 248679), (123, 165786), (246, 82893), (369, 55262), (738, 27631)]