128698505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{353}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 171279360

約数和(自身を除く): 42580855

約数列:

[1, 5, 13, 65, 71, 79, 353, 355, 395, 923, 1027, 1765, 4589, 4615, 5135, 5609, 22945, 25063, 27887, 28045, 72917, 125315, 139435, 325819, 362531, 364585, 1629095, 1812655, 1979977, 9899885, 25739701, 128698505]

約数ペア:

[(1, 128698505), (5, 25739701), (13, 9899885), (65, 1979977), (71, 1812655), (79, 1629095), (353, 364585), (355, 362531), (395, 325819), (923, 139435), (1027, 125315), (1765, 72917), (4589, 28045), (4615, 27887), (5135, 25063), (5609, 22945)]