21080486

素因数分解:

$2^1\times 7^2\times {\mathrm{251}}^1\times {\mathrm{857}}^1$

素因数の和:1124

約数の個数: 24

約数和(自身を含む): 36972936

約数和(自身を除く): 15892450

約数列:

[1, 2, 7, 14, 49, 98, 251, 502, 857, 1714, 1757, 3514, 5999, 11998, 12299, 24598, 41993, 83986, 215107, 430214, 1505749, 3011498, 10540243, 21080486]

約数ペア:

[(1, 21080486), (2, 10540243), (7, 3011498), (14, 1505749), (49, 430214), (98, 215107), (251, 83986), (502, 41993), (857, 24598), (1714, 12299), (1757, 11998), (3514, 5999)]