81843355

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{271}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 120245760

約数和(自身を除く): 38402405

約数列:

[1, 5, 11, 17, 19, 55, 85, 95, 187, 209, 271, 289, 323, 935, 1045, 1355, 1445, 1615, 2981, 3179, 3553, 4607, 5149, 5491, 14905, 15895, 17765, 23035, 25745, 27455, 50677, 56639, 60401, 78319, 87533, 253385, 283195, 302005, 391595, 437665, 861509, 962863, 1488061, 4307545, 4814315, 7440305, 16368671, 81843355]

約数ペア:

[(1, 81843355), (5, 16368671), (11, 7440305), (17, 4814315), (19, 4307545), (55, 1488061), (85, 962863), (95, 861509), (187, 437665), (209, 391595), (271, 302005), (289, 283195), (323, 253385), (935, 87533), (1045, 78319), (1355, 60401), (1445, 56639), (1615, 50677), (2981, 27455), (3179, 25745), (3553, 23035), (4607, 17765), (5149, 15895), (5491, 14905)]