128449256

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{28723}}^1$

素因数の和:28785

約数の個数: 32

約数和(自身を含む): 265409760

約数和(自身を除く): 136960504

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 104, 172, 344, 559, 1118, 2236, 4472, 28723, 57446, 114892, 229784, 373399, 746798, 1235089, 1493596, 2470178, 2987192, 4940356, 9880712, 16056157, 32112314, 64224628, 128449256]

約数ペア:

[(1, 128449256), (2, 64224628), (4, 32112314), (8, 16056157), (13, 9880712), (26, 4940356), (43, 2987192), (52, 2470178), (86, 1493596), (104, 1235089), (172, 746798), (344, 373399), (559, 229784), (1118, 114892), (2236, 57446), (4472, 28723)]