2220229640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{781771}}^1$

素因数の和:781853

約数の個数: 32

約数和(自身を含む): 5065882560

約数和(自身を除く): 2845652920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 781771, 1563542, 3127084, 3908855, 6254168, 7817710, 15635420, 31270840, 55505741, 111011482, 222022964, 277528705, 444045928, 555057410, 1110114820, 2220229640]

約数ペア:

[(1, 2220229640), (2, 1110114820), (4, 555057410), (5, 444045928), (8, 277528705), (10, 222022964), (20, 111011482), (40, 55505741), (71, 31270840), (142, 15635420), (284, 7817710), (355, 6254168), (568, 3908855), (710, 3127084), (1420, 1563542), (2840, 781771)]