20887951

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{919}}^1$

素因数の和:1134

約数の個数: 16

約数和(自身を含む): 25436160

約数和(自身を除く): 4548209

約数列:

[1, 7, 17, 119, 191, 919, 1337, 3247, 6433, 15623, 22729, 109361, 175529, 1228703, 2983993, 20887951]

約数ペア:

[(1, 20887951), (7, 2983993), (17, 1228703), (119, 175529), (191, 109361), (919, 22729), (1337, 15623), (3247, 6433)]