161090

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:277

約数の個数: 16

約数和(自身を含む): 294840

約数和(自身を除く): 133750

約数列:

[1, 2, 5, 10, 89, 178, 181, 362, 445, 890, 905, 1810, 16109, 32218, 80545, 161090]

約数ペア:

[(1, 161090), (2, 80545), (5, 32218), (10, 16109), (89, 1810), (178, 905), (181, 890), (362, 445)]