639541168

素因数分解:

$2^4\times 7^1\times {\mathrm{5710189}}^1$

素因数の和:5710204

約数の個数: 20

約数和(自身を含む): 1416127120

約数和(自身を除く): 776585952

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 5710189, 11420378, 22840756, 39971323, 45681512, 79942646, 91363024, 159885292, 319770584, 639541168]

約数ペア:

[(1, 639541168), (2, 319770584), (4, 159885292), (7, 91363024), (8, 79942646), (14, 45681512), (16, 39971323), (28, 22840756), (56, 11420378), (112, 5710189)]