81921895

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{2137}}^1$

素因数の和:2211

約数の個数: 32

約数和(自身を含む): 116375616

約数和(自身を除く): 34453721

約数列:

[1, 5, 11, 17, 41, 55, 85, 187, 205, 451, 697, 935, 2137, 2255, 3485, 7667, 10685, 23507, 36329, 38335, 87617, 117535, 181645, 399619, 438085, 963787, 1489489, 1998095, 4818935, 7447445, 16384379, 81921895]

約数ペア:

[(1, 81921895), (5, 16384379), (11, 7447445), (17, 4818935), (41, 1998095), (55, 1489489), (85, 963787), (187, 438085), (205, 399619), (451, 181645), (697, 117535), (935, 87617), (2137, 38335), (2255, 36329), (3485, 23507), (7667, 10685)]