20412788

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{10789}}^1$

素因数の和:10847

約数の個数: 24

約数和(自身を含む): 39879840

約数和(自身を除く): 19467052

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 473, 946, 1892, 10789, 21578, 43156, 118679, 237358, 463927, 474716, 927854, 1855708, 5103197, 10206394, 20412788]

約数ペア:

[(1, 20412788), (2, 10206394), (4, 5103197), (11, 1855708), (22, 927854), (43, 474716), (44, 463927), (86, 237358), (172, 118679), (473, 43156), (946, 21578), (1892, 10789)]