21004784

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{10337}}^1$

素因数の和:10472

約数の個数: 20

約数和(自身を含む): 41021184

約数和(自身を除く): 20016400

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 10337, 20674, 41348, 82696, 165392, 1312799, 2625598, 5251196, 10502392, 21004784]

約数ペア:

[(1, 21004784), (2, 10502392), (4, 5251196), (8, 2625598), (16, 1312799), (127, 165392), (254, 82696), (508, 41348), (1016, 20674), (2032, 10337)]