20597480

素因数分解:

$2^3\times 5^1\times {\mathrm{461}}^1\times {\mathrm{1117}}^1$

素因数の和:1589

約数の個数: 32

約数和(自身を含む): 46486440

約数和(自身を除く): 25888960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 461, 922, 1117, 1844, 2234, 2305, 3688, 4468, 4610, 5585, 8936, 9220, 11170, 18440, 22340, 44680, 514937, 1029874, 2059748, 2574685, 4119496, 5149370, 10298740, 20597480]

約数ペア:

[(1, 20597480), (2, 10298740), (4, 5149370), (5, 4119496), (8, 2574685), (10, 2059748), (20, 1029874), (40, 514937), (461, 44680), (922, 22340), (1117, 18440), (1844, 11170), (2234, 9220), (2305, 8936), (3688, 5585), (4468, 4610)]