21000827204

素因数分解:

$2^2\times 7^1\times {\mathrm{2803}}^1\times {\mathrm{267581}}^1$

素因数の和:270395

約数の個数: 24

約数和(自身を含む): 42016795968

約数和(自身を除く): 21015968764

約数列:

[1, 2, 4, 7, 14, 28, 2803, 5606, 11212, 19621, 39242, 78484, 267581, 535162, 1070324, 1873067, 3746134, 7492268, 750029543, 1500059086, 3000118172, 5250206801, 10500413602, 21000827204]

約数ペア:

[(1, 21000827204), (2, 10500413602), (4, 5250206801), (7, 3000118172), (14, 1500059086), (28, 750029543), (2803, 7492268), (5606, 3746134), (11212, 1873067), (19621, 1070324), (39242, 535162), (78484, 267581)]