21082172

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{3907}}^1$

素因数の和:4001

約数の個数: 24

約数和(自身を含む): 39392640

約数和(自身を除く): 18310468

約数列:

[1, 2, 4, 19, 38, 71, 76, 142, 284, 1349, 2698, 3907, 5396, 7814, 15628, 74233, 148466, 277397, 296932, 554794, 1109588, 5270543, 10541086, 21082172]

約数ペア:

[(1, 21082172), (2, 10541086), (4, 5270543), (19, 1109588), (38, 554794), (71, 296932), (76, 277397), (142, 148466), (284, 74233), (1349, 15628), (2698, 7814), (3907, 5396)]