81696818

素因数分解:

$2^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{19387}}^1$

素因数の和:19446

約数の個数: 24

約数和(自身を含む): 145875312

約数和(自身を除く): 64178494

約数列:

[1, 2, 7, 14, 43, 49, 86, 98, 301, 602, 2107, 4214, 19387, 38774, 135709, 271418, 833641, 949963, 1667282, 1899926, 5835487, 11670974, 40848409, 81696818]

約数ペア:

[(1, 81696818), (2, 40848409), (7, 11670974), (14, 5835487), (43, 1899926), (49, 1667282), (86, 949963), (98, 833641), (301, 271418), (602, 135709), (2107, 38774), (4214, 19387)]