28439740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{203141}}^1$

素因数の和:203157

約数の個数: 24

約数和(自身を含む): 68255712

約数和(自身を除く): 39815972

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 203141, 406282, 812564, 1015705, 1421987, 2031410, 2843974, 4062820, 5687948, 7109935, 14219870, 28439740]

約数ペア:

[(1, 28439740), (2, 14219870), (4, 7109935), (5, 5687948), (7, 4062820), (10, 2843974), (14, 2031410), (20, 1421987), (28, 1015705), (35, 812564), (70, 406282), (140, 203141)]