128778895

素因数分解:

$5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{28087}}^1$

素因数の和:28230

約数の個数: 16

約数和(自身を含む): 177965568

約数和(自身を除く): 49186673

約数列:

[1, 5, 7, 35, 131, 655, 917, 4585, 28087, 140435, 196609, 983045, 3679397, 18396985, 25755779, 128778895]

約数ペア:

[(1, 128778895), (5, 25755779), (7, 18396985), (35, 3679397), (131, 983045), (655, 196609), (917, 140435), (4585, 28087)]