81665768

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{248981}}^1$

素因数の和:249028

約数の個数: 16

約数和(自身を含む): 156858660

約数和(自身を除く): 75192892

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 248981, 497962, 995924, 1991848, 10208221, 20416442, 40832884, 81665768]

約数ペア:

[(1, 81665768), (2, 40832884), (4, 20416442), (8, 10208221), (41, 1991848), (82, 995924), (164, 497962), (328, 248981)]