19991868

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{128153}}^1$

素因数の和:128173

約数の個数: 24

約数和(自身を含む): 50236368

約数和(自身を除く): 30244500

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 128153, 256306, 384459, 512612, 768918, 1537836, 1665989, 3331978, 4997967, 6663956, 9995934, 19991868]

約数ペア:

[(1, 19991868), (2, 9995934), (3, 6663956), (4, 4997967), (6, 3331978), (12, 1665989), (13, 1537836), (26, 768918), (39, 512612), (52, 384459), (78, 256306), (156, 128153)]