81691885

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{2131}}^1$

素因数の和:2205

約数の個数: 32

約数和(自身を含む): 116049024

約数和(自身を除く): 34357139

約数列:

[1, 5, 11, 17, 41, 55, 85, 187, 205, 451, 697, 935, 2131, 2255, 3485, 7667, 10655, 23441, 36227, 38335, 87371, 117205, 181135, 398497, 436855, 961081, 1485307, 1992485, 4805405, 7426535, 16338377, 81691885]

約数ペア:

[(1, 81691885), (5, 16338377), (11, 7426535), (17, 4805405), (41, 1992485), (55, 1485307), (85, 961081), (187, 436855), (205, 398497), (451, 181135), (697, 117205), (935, 87371), (2131, 38335), (2255, 36227), (3485, 23441), (7667, 10655)]