81118880

素因数分解:

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

素因数の和:507008

約数の個数: 24

約数和(自身を含む): 191643732

約数和(自身を除く): 110524852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 506993, 1013986, 2027972, 2534965, 4055944, 5069930, 8111888, 10139860, 16223776, 20279720, 40559440, 81118880]

約数ペア:

[(1, 81118880), (2, 40559440), (4, 20279720), (5, 16223776), (8, 10139860), (10, 8111888), (16, 5069930), (20, 4055944), (32, 2534965), (40, 2027972), (80, 1013986), (160, 506993)]