81159981

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{1559}}^1$

素因数の和:1673

約数の個数: 32

約数和(自身を含む): 128993280

約数和(自身を除く): 47833299

約数列:

[1, 3, 7, 21, 37, 67, 111, 201, 259, 469, 777, 1407, 1559, 2479, 4677, 7437, 10913, 17353, 32739, 52059, 57683, 104453, 173049, 313359, 403781, 731171, 1211343, 2193513, 3864761, 11594283, 27053327, 81159981]

約数ペア:

[(1, 81159981), (3, 27053327), (7, 11594283), (21, 3864761), (37, 2193513), (67, 1211343), (111, 731171), (201, 403781), (259, 313359), (469, 173049), (777, 104453), (1407, 57683), (1559, 52059), (2479, 32739), (4677, 17353), (7437, 10913)]