200005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1$

素因数の和:216

約数の個数: 16

約数和(自身を含む): 275184

約数和(自身を除く): 75179

約数列:

[1, 5, 13, 17, 65, 85, 181, 221, 905, 1105, 2353, 3077, 11765, 15385, 40001, 200005]

約数ペア:

[(1, 200005), (5, 40001), (13, 15385), (17, 11765), (65, 3077), (85, 2353), (181, 1105), (221, 905)]