81841136

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{1531}}^1$

素因数の和:1809

約数の個数: 40

約数和(自身を含む): 171541104

約数和(自身を除く): 89699968

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 257, 514, 1028, 1531, 2056, 3062, 3341, 4112, 6124, 6682, 12248, 13364, 19903, 24496, 26728, 39806, 53456, 79612, 159224, 318448, 393467, 786934, 1573868, 3147736, 5115071, 6295472, 10230142, 20460284, 40920568, 81841136]

約数ペア:

[(1, 81841136), (2, 40920568), (4, 20460284), (8, 10230142), (13, 6295472), (16, 5115071), (26, 3147736), (52, 1573868), (104, 786934), (208, 393467), (257, 318448), (514, 159224), (1028, 79612), (1531, 53456), (2056, 39806), (3062, 26728), (3341, 24496), (4112, 19903), (6124, 13364), (6682, 12248)]