81378745

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{233}}^1\times {\mathrm{587}}^1$

素因数の和:849

約数の個数: 32

約数和(自身を含む): 118879488

約数和(自身を除く): 37500743

約数列:

[1, 5, 7, 17, 35, 85, 119, 233, 587, 595, 1165, 1631, 2935, 3961, 4109, 8155, 9979, 19805, 20545, 27727, 49895, 69853, 136771, 138635, 349265, 683855, 957397, 2325107, 4786985, 11625535, 16275749, 81378745]

約数ペア:

[(1, 81378745), (5, 16275749), (7, 11625535), (17, 4786985), (35, 2325107), (85, 957397), (119, 683855), (233, 349265), (587, 138635), (595, 136771), (1165, 69853), (1631, 49895), (2935, 27727), (3961, 20545), (4109, 19805), (8155, 9979)]