81257186

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{223}}^2$

素因数の和:510

約数の個数: 24

約数和(自身を含む): 131875920

約数和(自身を除く): 50618734

約数列:

[1, 2, 19, 38, 43, 86, 223, 446, 817, 1634, 4237, 8474, 9589, 19178, 49729, 99458, 182191, 364382, 944851, 1889702, 2138347, 4276694, 40628593, 81257186]

約数ペア:

[(1, 81257186), (2, 40628593), (19, 4276694), (38, 2138347), (43, 1889702), (86, 944851), (223, 364382), (446, 182191), (817, 99458), (1634, 49729), (4237, 19178), (8474, 9589)]