128575139

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{293}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 165957120

約数和(自身を除く): 37381981

約数列:

[1, 7, 11, 41, 77, 139, 287, 293, 451, 973, 1529, 2051, 3157, 3223, 5699, 10703, 12013, 22561, 39893, 40727, 62689, 84091, 132143, 285089, 438823, 447997, 925001, 1669807, 3135979, 11688649, 18367877, 128575139]

約数ペア:

[(1, 128575139), (7, 18367877), (11, 11688649), (41, 3135979), (77, 1669807), (139, 925001), (287, 447997), (293, 438823), (451, 285089), (973, 132143), (1529, 84091), (2051, 62689), (3157, 40727), (3223, 39893), (5699, 22561), (10703, 12013)]