128778256

素因数分解:

$2^4\times {\mathrm{1129}}^1\times {\mathrm{7129}}^1$

素因数の和:8266

約数の個数: 20

約数和(自身を含む): 249763900

約数和(自身を除く): 120985644

約数列:

[1, 2, 4, 8, 16, 1129, 2258, 4516, 7129, 9032, 14258, 18064, 28516, 57032, 114064, 8048641, 16097282, 32194564, 64389128, 128778256]

約数ペア:

[(1, 128778256), (2, 64389128), (4, 32194564), (8, 16097282), (16, 8048641), (1129, 114064), (2258, 57032), (4516, 28516), (7129, 18064), (9032, 14258)]