81658052

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{20981}}^1$

素因数の和:21131

約数の個数: 24

約数和(自身を含む): 164498880

約数和(自身を除く): 82840828

約数列:

[1, 2, 4, 7, 14, 28, 139, 278, 556, 973, 1946, 3892, 20981, 41962, 83924, 146867, 293734, 587468, 2916359, 5832718, 11665436, 20414513, 40829026, 81658052]

約数ペア:

[(1, 81658052), (2, 40829026), (4, 20414513), (7, 11665436), (14, 5832718), (28, 2916359), (139, 587468), (278, 293734), (556, 146867), (973, 83924), (1946, 41962), (3892, 20981)]