20866040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40127}}^1$

素因数の和:40151

約数の個数: 32

約数和(自身を含む): 50561280

約数和(自身を除く): 29695240

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40127, 80254, 160508, 200635, 321016, 401270, 521651, 802540, 1043302, 1605080, 2086604, 2608255, 4173208, 5216510, 10433020, 20866040]

約数ペア:

[(1, 20866040), (2, 10433020), (4, 5216510), (5, 4173208), (8, 2608255), (10, 2086604), (13, 1605080), (20, 1043302), (26, 802540), (40, 521651), (52, 401270), (65, 321016), (104, 200635), (130, 160508), (260, 80254), (520, 40127)]