81548404

素因数分解:

$2^2\times 7^1\times {\mathrm{389}}^1\times {\mathrm{7487}}^1$

素因数の和:7887

約数の個数: 24

約数和(自身を含む): 163537920

約数和(自身を除く): 81989516

約数列:

[1, 2, 4, 7, 14, 28, 389, 778, 1556, 2723, 5446, 7487, 10892, 14974, 29948, 52409, 104818, 209636, 2912443, 5824886, 11649772, 20387101, 40774202, 81548404]

約数ペア:

[(1, 81548404), (2, 40774202), (4, 20387101), (7, 11649772), (14, 5824886), (28, 2912443), (389, 209636), (778, 104818), (1556, 52409), (2723, 29948), (5446, 14974), (7487, 10892)]