20891164

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43889}}^1$

素因数の和:43917

約数の個数: 24

約数和(自身を含む): 44241120

約数和(自身を除く): 23349956

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 238, 476, 43889, 87778, 175556, 307223, 614446, 746113, 1228892, 1492226, 2984452, 5222791, 10445582, 20891164]

約数ペア:

[(1, 20891164), (2, 10445582), (4, 5222791), (7, 2984452), (14, 1492226), (17, 1228892), (28, 746113), (34, 614446), (68, 307223), (119, 175556), (238, 87778), (476, 43889)]