28442420

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{13807}}^1$

素因数の和:13919

約数の個数: 24

約数和(自身を含む): 60313344

約数和(自身を除く): 31870924

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 13807, 27614, 55228, 69035, 138070, 276140, 1422121, 2844242, 5688484, 7110605, 14221210, 28442420]

約数ペア:

[(1, 28442420), (2, 14221210), (4, 7110605), (5, 5688484), (10, 2844242), (20, 1422121), (103, 276140), (206, 138070), (412, 69035), (515, 55228), (1030, 27614), (2060, 13807)]