21687554

素因数分解:

$2^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{19609}}^1$

素因数の和:19697

約数の個数: 16

約数和(自身を含む): 37651200

約数和(自身を除く): 15963646

約数列:

[1, 2, 7, 14, 79, 158, 553, 1106, 19609, 39218, 137263, 274526, 1549111, 3098222, 10843777, 21687554]

約数ペア:

[(1, 21687554), (2, 10843777), (7, 3098222), (14, 1549111), (79, 274526), (158, 137263), (553, 39218), (1106, 19609)]