643272208

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{2116027}}^1$

素因数の和:2116054

約数の個数: 20

約数和(自身を含む): 1311937360

約数和(自身を除く): 668665152

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 2116027, 4232054, 8464108, 16928216, 33856432, 40204513, 80409026, 160818052, 321636104, 643272208]

約数ペア:

[(1, 643272208), (2, 321636104), (4, 160818052), (8, 80409026), (16, 40204513), (19, 33856432), (38, 16928216), (76, 8464108), (152, 4232054), (304, 2116027)]