19987079

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{769}}^1$

素因数の和:902

約数の個数: 16

約数和(自身を含む): 23654400

約数和(自身を除く): 3667321

約数列:

[1, 7, 47, 79, 329, 553, 769, 3713, 5383, 25991, 36143, 60751, 253001, 425257, 2855297, 19987079]

約数ペア:

[(1, 19987079), (7, 2855297), (47, 425257), (79, 253001), (329, 60751), (553, 36143), (769, 25991), (3713, 5383)]