20079440

素因数分解:

$2^4\times 5^1\times {\mathrm{250993}}^1$

素因数の和:251006

約数の個数: 20

約数和(自身を含む): 46684884

約数和(自身を除く): 26605444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 250993, 501986, 1003972, 1254965, 2007944, 2509930, 4015888, 5019860, 10039720, 20079440]

約数ペア:

[(1, 20079440), (2, 10039720), (4, 5019860), (5, 4015888), (8, 2509930), (10, 2007944), (16, 1254965), (20, 1003972), (40, 501986), (80, 250993)]