208505

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1$

素因数の和:256

約数の個数: 16

約数和(自身を含む): 290304

約数和(自身を除く): 81799

約数列:

[1, 5, 11, 17, 55, 85, 187, 223, 935, 1115, 2453, 3791, 12265, 18955, 41701, 208505]

約数ペア:

[(1, 208505), (5, 41701), (11, 18955), (17, 12265), (55, 3791), (85, 2453), (187, 1115), (223, 935)]