8420260

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{9791}}^1$

素因数の和:9843

約数の個数: 24

約数和(自身を含む): 18095616

約数和(自身を除く): 9675356

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 9791, 19582, 39164, 48955, 97910, 195820, 421013, 842026, 1684052, 2105065, 4210130, 8420260]

約数ペア:

[(1, 8420260), (2, 4210130), (4, 2105065), (5, 1684052), (10, 842026), (20, 421013), (43, 195820), (86, 97910), (172, 48955), (215, 39164), (430, 19582), (860, 9791)]