128667515

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{643}}^1\times {\mathrm{1291}}^1$

素因数の和:1970

約数の個数: 16

約数和(自身を含む): 159753216

約数和(自身を除く): 31085701

約数列:

[1, 5, 31, 155, 643, 1291, 3215, 6455, 19933, 40021, 99665, 200105, 830113, 4150565, 25733503, 128667515]

約数ペア:

[(1, 128667515), (5, 25733503), (31, 4150565), (155, 830113), (643, 200105), (1291, 99665), (3215, 40021), (6455, 19933)]