21555156

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{256609}}^1$

素因数の和:256623

約数の個数: 24

約数和(自身を含む): 57480640

約数和(自身を除く): 35925484

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 256609, 513218, 769827, 1026436, 1539654, 1796263, 3079308, 3592526, 5388789, 7185052, 10777578, 21555156]

約数ペア:

[(1, 21555156), (2, 10777578), (3, 7185052), (4, 5388789), (6, 3592526), (7, 3079308), (12, 1796263), (14, 1539654), (21, 1026436), (28, 769827), (42, 513218), (84, 256609)]