39887720

素因数分解:

$2^3\times 5^1\times {\mathrm{443}}^1\times {\mathrm{2251}}^1$

素因数の和:2705

約数の個数: 32

約数和(自身を含む): 89989920

約数和(自身を除く): 50102200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 443, 886, 1772, 2215, 2251, 3544, 4430, 4502, 8860, 9004, 11255, 17720, 18008, 22510, 45020, 90040, 997193, 1994386, 3988772, 4985965, 7977544, 9971930, 19943860, 39887720]

約数ペア:

[(1, 39887720), (2, 19943860), (4, 9971930), (5, 7977544), (8, 4985965), (10, 3988772), (20, 1994386), (40, 997193), (443, 90040), (886, 45020), (1772, 22510), (2215, 18008), (2251, 17720), (3544, 11255), (4430, 9004), (4502, 8860)]