81860828

素因数分解:

$2^2\times 7^1\times {\mathrm{641}}^1\times {\mathrm{4561}}^1$

素因数の和:5213

約数の個数: 24

約数和(自身を含む): 164013024

約数和(自身を除く): 82152196

約数列:

[1, 2, 4, 7, 14, 28, 641, 1282, 2564, 4487, 4561, 8974, 9122, 17948, 18244, 31927, 63854, 127708, 2923601, 5847202, 11694404, 20465207, 40930414, 81860828]

約数ペア:

[(1, 81860828), (2, 40930414), (4, 20465207), (7, 11694404), (14, 5847202), (28, 2923601), (641, 127708), (1282, 63854), (2564, 31927), (4487, 18244), (4561, 17948), (8974, 9122)]