21000680

素因数分解:

$2^3\times 5^1\times {\mathrm{525017}}^1$

素因数の和:525028

約数の個数: 16

約数和(自身を含む): 47251620

約数和(自身を除く): 26250940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 525017, 1050034, 2100068, 2625085, 4200136, 5250170, 10500340, 21000680]

約数ペア:

[(1, 21000680), (2, 10500340), (4, 5250170), (5, 4200136), (8, 2625085), (10, 2100068), (20, 1050034), (40, 525017)]