438889720

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{193}}^1\times {\mathrm{409}}^1$

素因数の和:752

約数の個数: 64

約数和(自身を含む): 1002204000

約数和(自身を除く): 563314280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 193, 278, 386, 409, 556, 695, 772, 818, 965, 1112, 1390, 1544, 1636, 1930, 2045, 2780, 3272, 3860, 4090, 5560, 7720, 8180, 16360, 26827, 53654, 56851, 78937, 107308, 113702, 134135, 157874, 214616, 227404, 268270, 284255, 315748, 394685, 454808, 536540, 568510, 631496, 789370, 1073080, 1137020, 1578740, 2274040, 3157480, 10972243, 21944486, 43888972, 54861215, 87777944, 109722430, 219444860, 438889720]

約数ペア:

[(1, 438889720), (2, 219444860), (4, 109722430), (5, 87777944), (8, 54861215), (10, 43888972), (20, 21944486), (40, 10972243), (139, 3157480), (193, 2274040), (278, 1578740), (386, 1137020), (409, 1073080), (556, 789370), (695, 631496), (772, 568510), (818, 536540), (965, 454808), (1112, 394685), (1390, 315748), (1544, 284255), (1636, 268270), (1930, 227404), (2045, 214616), (2780, 157874), (3272, 134135), (3860, 113702), (4090, 107308), (5560, 78937), (7720, 56851), (8180, 53654), (16360, 26827)]