128663991

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{250807}}^1$

素因数の和:250835

約数の個数: 16

約数和(自身を含む): 200646400

約数和(自身を除く): 71982409

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 250807, 752421, 2257263, 4765333, 6771789, 14295999, 42887997, 128663991]

約数ペア:

[(1, 128663991), (3, 42887997), (9, 14295999), (19, 6771789), (27, 4765333), (57, 2257263), (171, 752421), (513, 250807)]