1916827720

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{214891}}^1$

素因数の和:215125

約数の個数: 32

約数和(自身を含む): 4332222720

約数和(自身を除く): 2415395000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 4460, 8920, 214891, 429782, 859564, 1074455, 1719128, 2148910, 4297820, 8595640, 47920693, 95841386, 191682772, 239603465, 383365544, 479206930, 958413860, 1916827720]

約数ペア:

[(1, 1916827720), (2, 958413860), (4, 479206930), (5, 383365544), (8, 239603465), (10, 191682772), (20, 95841386), (40, 47920693), (223, 8595640), (446, 4297820), (892, 2148910), (1115, 1719128), (1784, 1074455), (2230, 859564), (4460, 429782), (8920, 214891)]