21246885

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42923}}^1$

素因数の和:42945

約数の個数: 24

約数和(自身を含む): 40176864

約数和(自身を除く): 18929979

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 42923, 128769, 214615, 386307, 472153, 643845, 1416459, 1931535, 2360765, 4249377, 7082295, 21246885]

約数ペア:

[(1, 21246885), (3, 7082295), (5, 4249377), (9, 2360765), (11, 1931535), (15, 1416459), (33, 643845), (45, 472153), (55, 386307), (99, 214615), (165, 128769), (495, 42923)]