21646795

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{9907}}^1$

素因数の和:9954

約数の個数: 16

約数和(自身を含む): 28535040

約数和(自身を除く): 6888245

約数列:

[1, 5, 19, 23, 95, 115, 437, 2185, 9907, 49535, 188233, 227861, 941165, 1139305, 4329359, 21646795]

約数ペア:

[(1, 21646795), (5, 4329359), (19, 1139305), (23, 941165), (95, 227861), (115, 188233), (437, 49535), (2185, 9907)]