21979192

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{181}}^1\times {\mathrm{353}}^1$

素因数の和:583

約数の個数: 32

約数和(自身を含む): 42522480

約数和(自身を除く): 20543288

約数列:

[1, 2, 4, 8, 43, 86, 172, 181, 344, 353, 362, 706, 724, 1412, 1448, 2824, 7783, 15179, 15566, 30358, 31132, 60716, 62264, 63893, 121432, 127786, 255572, 511144, 2747399, 5494798, 10989596, 21979192]

約数ペア:

[(1, 21979192), (2, 10989596), (4, 5494798), (8, 2747399), (43, 511144), (86, 255572), (172, 127786), (181, 121432), (344, 63893), (353, 62264), (362, 60716), (706, 31132), (724, 30358), (1412, 15566), (1448, 15179), (2824, 7783)]