128468185

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{643}}^1\times {\mathrm{1289}}^1$

素因数の和:1968

約数の個数: 16

約数和(自身を含む): 159505920

約数和(自身を除く): 31037735

約数列:

[1, 5, 31, 155, 643, 1289, 3215, 6445, 19933, 39959, 99665, 199795, 828827, 4144135, 25693637, 128468185]

約数ペア:

[(1, 128468185), (5, 25693637), (31, 4144135), (155, 828827), (643, 199795), (1289, 99665), (3215, 39959), (6445, 19933)]