21267411

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 32555520

約数和(自身を除く): 11288109

約数列:

[1, 3, 11, 29, 33, 71, 87, 213, 313, 319, 781, 939, 957, 2059, 2343, 3443, 6177, 9077, 10329, 22223, 22649, 27231, 66669, 67947, 99847, 244453, 299541, 644467, 733359, 1933401, 7089137, 21267411]

約数ペア:

[(1, 21267411), (3, 7089137), (11, 1933401), (29, 733359), (33, 644467), (71, 299541), (87, 244453), (213, 99847), (313, 67947), (319, 66669), (781, 27231), (939, 22649), (957, 22223), (2059, 10329), (2343, 9077), (3443, 6177)]