21000742072

素因数分解:

$2^3\times {\mathrm{185401}}^1\times {\mathrm{14159}}^1$

素因数の和:199566

約数の個数: 16

約数和(自身を含む): 39379384800

約数和(自身を除く): 18378642728

約数列:

[1, 2, 4, 8, 14159, 28318, 56636, 113272, 185401, 370802, 741604, 1483208, 2625092759, 5250185518, 10500371036, 21000742072]

約数ペア:

[(1, 21000742072), (2, 10500371036), (4, 5250185518), (8, 2625092759), (14159, 1483208), (28318, 741604), (56636, 370802), (113272, 185401)]