28185620

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{17839}}^1$

素因数の和:17927

約数の個数: 24

約数和(自身を含む): 59942400

約数和(自身を除く): 31756780

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 17839, 35678, 71356, 89195, 178390, 356780, 1409281, 2818562, 5637124, 7046405, 14092810, 28185620]

約数ペア:

[(1, 28185620), (2, 14092810), (4, 7046405), (5, 5637124), (10, 2818562), (20, 1409281), (79, 356780), (158, 178390), (316, 89195), (395, 71356), (790, 35678), (1580, 17839)]