81111779

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{191}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 102236160

約数和(自身を除く): 21124381

約数列:

[1, 7, 19, 31, 103, 133, 191, 217, 589, 721, 1337, 1957, 3193, 3629, 4123, 5921, 13699, 19673, 22351, 25403, 41447, 60667, 112499, 137711, 373787, 424669, 609863, 787493, 2616509, 4269041, 11587397, 81111779]

約数ペア:

[(1, 81111779), (7, 11587397), (19, 4269041), (31, 2616509), (103, 787493), (133, 609863), (191, 424669), (217, 373787), (589, 137711), (721, 112499), (1337, 60667), (1957, 41447), (3193, 25403), (3629, 22351), (4123, 19673), (5921, 13699)]