20774780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79903}}^1$

素因数の和:79925

約数の個数: 24

約数和(自身を含む): 46983552

約数和(自身を除く): 26208772

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 79903, 159806, 319612, 399515, 799030, 1038739, 1598060, 2077478, 4154956, 5193695, 10387390, 20774780]

約数ペア:

[(1, 20774780), (2, 10387390), (4, 5193695), (5, 4154956), (10, 2077478), (13, 1598060), (20, 1038739), (26, 799030), (52, 399515), (65, 319612), (130, 159806), (260, 79903)]