21160030

素因数分解:

$2^1\times 5^1\times {\mathrm{277}}^1\times {\mathrm{7639}}^1$

素因数の和:7923

約数の個数: 16

約数和(自身を含む): 38230560

約数和(自身を除く): 17070530

約数列:

[1, 2, 5, 10, 277, 554, 1385, 2770, 7639, 15278, 38195, 76390, 2116003, 4232006, 10580015, 21160030]

約数ペア:

[(1, 21160030), (2, 10580015), (5, 4232006), (10, 2116003), (277, 76390), (554, 38195), (1385, 15278), (2770, 7639)]