128913872

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{259907}}^1$

素因数の和:259946

約数の個数: 20

約数和(自身を含む): 257828736

約数和(自身を除く): 128914864

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 259907, 519814, 1039628, 2079256, 4158512, 8057117, 16114234, 32228468, 64456936, 128913872]

約数ペア:

[(1, 128913872), (2, 64456936), (4, 32228468), (8, 16114234), (16, 8057117), (31, 4158512), (62, 2079256), (124, 1039628), (248, 519814), (496, 259907)]