20207720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38861}}^1$

素因数の和:38885

約数の個数: 32

約数和(自身を含む): 48966120

約数和(自身を除く): 28758400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 38861, 77722, 155444, 194305, 310888, 388610, 505193, 777220, 1010386, 1554440, 2020772, 2525965, 4041544, 5051930, 10103860, 20207720]

約数ペア:

[(1, 20207720), (2, 10103860), (4, 5051930), (5, 4041544), (8, 2525965), (10, 2020772), (13, 1554440), (20, 1010386), (26, 777220), (40, 505193), (52, 388610), (65, 310888), (104, 194305), (130, 155444), (260, 77722), (520, 38861)]