21738766

素因数分解:

$2^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{11171}}^1$

素因数の和:11319

約数の個数: 16

約数和(自身を含む): 37537920

約数和(自身を除く): 15799154

約数列:

[1, 2, 7, 14, 139, 278, 973, 1946, 11171, 22342, 78197, 156394, 1552769, 3105538, 10869383, 21738766]

約数ペア:

[(1, 21738766), (2, 10869383), (7, 3105538), (14, 1552769), (139, 156394), (278, 78197), (973, 22342), (1946, 11171)]