138977321

素因数分解:

$7^1\times {\mathrm{137}}^1\times {\mathrm{313}}^1\times {\mathrm{463}}^1$

素因数の和:920

約数の個数: 16

約数和(自身を含む): 160848384

約数和(自身を除く): 21871063

約数列:

[1, 7, 137, 313, 463, 959, 2191, 3241, 42881, 63431, 144919, 300167, 444017, 1014433, 19853903, 138977321]

約数ペア:

[(1, 138977321), (7, 19853903), (137, 1014433), (313, 444017), (463, 300167), (959, 144919), (2191, 63431), (3241, 42881)]