1940440

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{349}}^1$

素因数の和:499

約数の個数: 32

約数和(自身を含む): 4410000

約数和(自身を除く): 2469560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 349, 556, 695, 698, 1112, 1390, 1396, 1745, 2780, 2792, 3490, 5560, 6980, 13960, 48511, 97022, 194044, 242555, 388088, 485110, 970220, 1940440]

約数ペア:

[(1, 1940440), (2, 970220), (4, 485110), (5, 388088), (8, 242555), (10, 194044), (20, 97022), (40, 48511), (139, 13960), (278, 6980), (349, 5560), (556, 3490), (695, 2792), (698, 2780), (1112, 1745), (1390, 1396)]