20279720

素因数分解:

$2^3\times 5^1\times {\mathrm{506993}}^1$

素因数の和:507004

約数の個数: 16

約数和(自身を含む): 45629460

約数和(自身を除く): 25349740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 506993, 1013986, 2027972, 2534965, 4055944, 5069930, 10139860, 20279720]

約数ペア:

[(1, 20279720), (2, 10139860), (4, 5069930), (5, 4055944), (8, 2534965), (10, 2027972), (20, 1013986), (40, 506993)]