20987197

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{16033}}^1$

素因数の和:16068

約数の個数: 16

約数和(自身を含む): 27706752

約数和(自身を除く): 6719555

約数列:

[1, 7, 11, 17, 77, 119, 187, 1309, 16033, 112231, 176363, 272561, 1234541, 1907927, 2998171, 20987197]

約数ペア:

[(1, 20987197), (7, 2998171), (11, 1907927), (17, 1234541), (77, 272561), (119, 176363), (187, 112231), (1309, 16033)]