18910220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{293}}^1\times {\mathrm{461}}^1$

素因数の和:770

約数の個数: 48

約数和(自身を含む): 45638208

約数和(自身を除く): 26727988

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 293, 461, 586, 922, 1172, 1465, 1844, 2051, 2305, 2930, 3227, 4102, 4610, 5860, 6454, 8204, 9220, 10255, 12908, 16135, 20510, 32270, 41020, 64540, 135073, 270146, 540292, 675365, 945511, 1350730, 1891022, 2701460, 3782044, 4727555, 9455110, 18910220]

約数ペア:

[(1, 18910220), (2, 9455110), (4, 4727555), (5, 3782044), (7, 2701460), (10, 1891022), (14, 1350730), (20, 945511), (28, 675365), (35, 540292), (70, 270146), (140, 135073), (293, 64540), (461, 41020), (586, 32270), (922, 20510), (1172, 16135), (1465, 12908), (1844, 10255), (2051, 9220), (2305, 8204), (2930, 6454), (3227, 5860), (4102, 4610)]