128538879

素因数分解:

$3^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{29009}}^1$

素因数の和:29230

約数の個数: 16

約数和(自身を含む): 196803840

約数和(自身を除く): 68264961

約数列:

[1, 3, 7, 21, 211, 633, 1477, 4431, 29009, 87027, 203063, 609189, 6120899, 18362697, 42846293, 128538879]

約数ペア:

[(1, 128538879), (3, 42846293), (7, 18362697), (21, 6120899), (211, 609189), (633, 203063), (1477, 87027), (4431, 29009)]