18966872

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{21751}}^1$

素因数の和:21866

約数の個数: 16

約数和(自身を含む): 35890800

約数和(自身を除く): 16923928

約数列:

[1, 2, 4, 8, 109, 218, 436, 872, 21751, 43502, 87004, 174008, 2370859, 4741718, 9483436, 18966872]

約数ペア:

[(1, 18966872), (2, 9483436), (4, 4741718), (8, 2370859), (109, 174008), (218, 87004), (436, 43502), (872, 21751)]