21721192

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{233}}^1\times {\mathrm{271}}^1$

素因数の和:553

約数の個数: 32

約数和(自身を含む): 42007680

約数和(自身を除く): 20286488

約数列:

[1, 2, 4, 8, 43, 86, 172, 233, 271, 344, 466, 542, 932, 1084, 1864, 2168, 10019, 11653, 20038, 23306, 40076, 46612, 63143, 80152, 93224, 126286, 252572, 505144, 2715149, 5430298, 10860596, 21721192]

約数ペア:

[(1, 21721192), (2, 10860596), (4, 5430298), (8, 2715149), (43, 505144), (86, 252572), (172, 126286), (233, 93224), (271, 80152), (344, 63143), (466, 46612), (542, 40076), (932, 23306), (1084, 20038), (1864, 11653), (2168, 10019)]