20716976

素因数分解:

$2^4\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1697}}^1$

素因数の和:1821

約数の個数: 40

約数和(自身を含む): 46321440

約数和(自身を除く): 25604464

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 109, 112, 218, 436, 763, 872, 1526, 1697, 1744, 3052, 3394, 6104, 6788, 11879, 12208, 13576, 23758, 27152, 47516, 95032, 184973, 190064, 369946, 739892, 1294811, 1479784, 2589622, 2959568, 5179244, 10358488, 20716976]

約数ペア:

[(1, 20716976), (2, 10358488), (4, 5179244), (7, 2959568), (8, 2589622), (14, 1479784), (16, 1294811), (28, 739892), (56, 369946), (109, 190064), (112, 184973), (218, 95032), (436, 47516), (763, 27152), (872, 23758), (1526, 13576), (1697, 12208), (1744, 11879), (3052, 6788), (3394, 6104)]