17981986

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{5413}}^1$

素因数の和:5577

約数の個数: 16

約数和(自身を含む): 29625408

約数和(自身を除く): 11643422

約数列:

[1, 2, 11, 22, 151, 302, 1661, 3322, 5413, 10826, 59543, 119086, 817363, 1634726, 8990993, 17981986]

約数ペア:

[(1, 17981986), (2, 8990993), (11, 1634726), (22, 817363), (151, 119086), (302, 59543), (1661, 10826), (3322, 5413)]