28038140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107839}}^1$

素因数の和:107861

約数の個数: 24

約数和(自身を含む): 63409920

約数和(自身を除く): 35371780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 107839, 215678, 431356, 539195, 1078390, 1401907, 2156780, 2803814, 5607628, 7009535, 14019070, 28038140]

約数ペア:

[(1, 28038140), (2, 14019070), (4, 7009535), (5, 5607628), (10, 2803814), (13, 2156780), (20, 1401907), (26, 1078390), (52, 539195), (65, 431356), (130, 215678), (260, 107839)]