21357735

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1901}}^1$

素因数の和:2023

約数の個数: 32

約数和(自身を含む): 39439872

約数和(自身を除く): 18082137

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 107, 321, 535, 749, 1605, 1901, 2247, 3745, 5703, 9505, 11235, 13307, 28515, 39921, 66535, 199605, 203407, 610221, 1017035, 1423849, 3051105, 4271547, 7119245, 21357735]

約数ペア:

[(1, 21357735), (3, 7119245), (5, 4271547), (7, 3051105), (15, 1423849), (21, 1017035), (35, 610221), (105, 203407), (107, 199605), (321, 66535), (535, 39921), (749, 28515), (1605, 13307), (1901, 11235), (2247, 9505), (3745, 5703)]