78876542

素因数分解:

$2^1\times {\mathrm{109}}^1\times {\mathrm{181}}^1\times {\mathrm{1999}}^1$

素因数の和:2291

約数の個数: 16

約数和(自身を含む): 120120000

約数和(自身を除く): 41243458

約数列:

[1, 2, 109, 181, 218, 362, 1999, 3998, 19729, 39458, 217891, 361819, 435782, 723638, 39438271, 78876542]

約数ペア:

[(1, 78876542), (2, 39438271), (109, 723638), (181, 435782), (218, 361819), (362, 217891), (1999, 39458), (3998, 19729)]