18729808

素因数分解:

$2^4\times {\mathrm{263}}^1\times {\mathrm{4451}}^1$

素因数の和:4722

約数の個数: 20

約数和(自身を含む): 36435168

約数和(自身を除く): 17705360

約数列:

[1, 2, 4, 8, 16, 263, 526, 1052, 2104, 4208, 4451, 8902, 17804, 35608, 71216, 1170613, 2341226, 4682452, 9364904, 18729808]

約数ペア:

[(1, 18729808), (2, 9364904), (4, 4682452), (8, 2341226), (16, 1170613), (263, 71216), (526, 35608), (1052, 17804), (2104, 8902), (4208, 4451)]