638353987072

素因数分解:

$2^9\times {\mathrm{1246785131}}^1$

素因数の和:1246785149

約数の個数: 20

約数和(自身を含む): 1275461190036

約数和(自身を除く): 637107202964

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1246785131, 2493570262, 4987140524, 9974281048, 19948562096, 39897124192, 79794248384, 159588496768, 319176993536, 638353987072]

約数ペア:

[(1, 638353987072), (2, 319176993536), (4, 159588496768), (8, 79794248384), (16, 39897124192), (32, 19948562096), (64, 9974281048), (128, 4987140524), (256, 2493570262), (512, 1246785131)]