81231661

素因数分解:

$7^3\times {\mathrm{17}}^1\times {\mathrm{13931}}^1$

素因数の和:13969

約数の個数: 16

約数和(自身を含む): 100310400

約数和(自身を除く): 19078739

約数列:

[1, 7, 17, 49, 119, 343, 833, 5831, 13931, 97517, 236827, 682619, 1657789, 4778333, 11604523, 81231661]

約数ペア:

[(1, 81231661), (7, 11604523), (17, 4778333), (49, 1657789), (119, 682619), (343, 236827), (833, 97517), (5831, 13931)]