20665205

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{5147}}^1$

素因数の和:5236

約数の個数: 16

約数和(自身を含む): 27428544

約数和(自身を除く): 6763339

約数列:

[1, 5, 11, 55, 73, 365, 803, 4015, 5147, 25735, 56617, 283085, 375731, 1878655, 4133041, 20665205]

約数ペア:

[(1, 20665205), (5, 4133041), (11, 1878655), (55, 375731), (73, 283085), (365, 56617), (803, 25735), (4015, 5147)]