28159720

素因数分解:

$2^3\times 5^1\times {\mathrm{337}}^1\times {\mathrm{2089}}^1$

素因数の和:2437

約数の個数: 32

約数和(自身を含む): 63577800

約数和(自身を除く): 35418080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 337, 674, 1348, 1685, 2089, 2696, 3370, 4178, 6740, 8356, 10445, 13480, 16712, 20890, 41780, 83560, 703993, 1407986, 2815972, 3519965, 5631944, 7039930, 14079860, 28159720]

約数ペア:

[(1, 28159720), (2, 14079860), (4, 7039930), (5, 5631944), (8, 3519965), (10, 2815972), (20, 1407986), (40, 703993), (337, 83560), (674, 41780), (1348, 20890), (1685, 16712), (2089, 13480), (2696, 10445), (3370, 8356), (4178, 6740)]