21559010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{195991}}^1$

素因数の和:196009

約数の個数: 16

約数和(自身を含む): 42334272

約数和(自身を除く): 20775262

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 195991, 391982, 979955, 1959910, 2155901, 4311802, 10779505, 21559010]

約数ペア:

[(1, 21559010), (2, 10779505), (5, 4311802), (10, 2155901), (11, 1959910), (22, 979955), (55, 391982), (110, 195991)]