18909080

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{3011}}^1$

素因数の和:3179

約数の個数: 32

約数和(自身を含む): 42830640

約数和(自身を除く): 23921560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3011, 3140, 6022, 6280, 12044, 15055, 24088, 30110, 60220, 120440, 472727, 945454, 1890908, 2363635, 3781816, 4727270, 9454540, 18909080]

約数ペア:

[(1, 18909080), (2, 9454540), (4, 4727270), (5, 3781816), (8, 2363635), (10, 1890908), (20, 945454), (40, 472727), (157, 120440), (314, 60220), (628, 30110), (785, 24088), (1256, 15055), (1570, 12044), (3011, 6280), (3140, 6022)]