21021530

素因数分解:

$2^1\times 5^1\times {\mathrm{277}}^1\times {\mathrm{7589}}^1$

素因数の和:7873

約数の個数: 16

約数和(自身を含む): 37980360

約数和(自身を除く): 16958830

約数列:

[1, 2, 5, 10, 277, 554, 1385, 2770, 7589, 15178, 37945, 75890, 2102153, 4204306, 10510765, 21021530]

約数ペア:

[(1, 21021530), (2, 10510765), (5, 4204306), (10, 2102153), (277, 75890), (554, 37945), (1385, 15178), (2770, 7589)]