2212890640

素因数分解:

$2^4\times 5^1\times {\mathrm{27661133}}^1$

素因数の和:27661146

約数の個数: 20

約数和(自身を含む): 5144970924

約数和(自身を除く): 2932080284

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 27661133, 55322266, 110644532, 138305665, 221289064, 276611330, 442578128, 553222660, 1106445320, 2212890640]

約数ペア:

[(1, 2212890640), (2, 1106445320), (4, 553222660), (5, 442578128), (8, 276611330), (10, 221289064), (16, 138305665), (20, 110644532), (40, 55322266), (80, 27661133)]