639730048

素因数分解:

$2^7\times {\mathrm{4997891}}^1$

素因数の和:4997905

約数の個数: 16

約数和(自身を含む): 1274462460

約数和(自身を除く): 634732412

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 4997891, 9995782, 19991564, 39983128, 79966256, 159932512, 319865024, 639730048]

約数ペア:

[(1, 639730048), (2, 319865024), (4, 159932512), (8, 79966256), (16, 39983128), (32, 19991564), (64, 9995782), (128, 4997891)]