1663201720

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{299137}}^1$

素因数の和:299287

約数の個数: 32

約数和(自身を含む): 3769138800

約数和(自身を除く): 2105937080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 299137, 598274, 1196548, 1495685, 2393096, 2991370, 5982740, 11965480, 41580043, 83160086, 166320172, 207900215, 332640344, 415800430, 831600860, 1663201720]

約数ペア:

[(1, 1663201720), (2, 831600860), (4, 415800430), (5, 332640344), (8, 207900215), (10, 166320172), (20, 83160086), (40, 41580043), (139, 11965480), (278, 5982740), (556, 2991370), (695, 2393096), (1112, 1495685), (1390, 1196548), (2780, 598274), (5560, 299137)]