81597640

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{43403}}^1$

素因数の和:43461

約数の個数: 32

約数和(自身を含む): 187505280

約数和(自身を除く): 105907640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 43403, 86806, 173612, 217015, 347224, 434030, 868060, 1736120, 2039941, 4079882, 8159764, 10199705, 16319528, 20399410, 40798820, 81597640]

約数ペア:

[(1, 81597640), (2, 40798820), (4, 20399410), (5, 16319528), (8, 10199705), (10, 8159764), (20, 4079882), (40, 2039941), (47, 1736120), (94, 868060), (188, 434030), (235, 347224), (376, 217015), (470, 173612), (940, 86806), (1880, 43403)]