20478645

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{3761}}^1$

素因数の和:3794

約数の個数: 36

約数和(自身を含む): 39026988

約数和(自身を除く): 18548343

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 121, 165, 363, 495, 605, 1089, 1815, 3761, 5445, 11283, 18805, 33849, 41371, 56415, 124113, 169245, 206855, 372339, 455081, 620565, 1365243, 1861695, 2275405, 4095729, 6826215, 20478645]

約数ペア:

[(1, 20478645), (3, 6826215), (5, 4095729), (9, 2275405), (11, 1861695), (15, 1365243), (33, 620565), (45, 455081), (55, 372339), (99, 206855), (121, 169245), (165, 124113), (363, 56415), (495, 41371), (605, 33849), (1089, 18805), (1815, 11283), (3761, 5445)]