28216210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{1289}}^1$

素因数の和:1506

約数の個数: 32

約数和(自身を含む): 55728000

約数和(自身を除く): 27511790

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 199, 398, 995, 1289, 1990, 2189, 2578, 4378, 6445, 10945, 12890, 14179, 21890, 28358, 70895, 141790, 256511, 513022, 1282555, 2565110, 2821621, 5643242, 14108105, 28216210]

約数ペア:

[(1, 28216210), (2, 14108105), (5, 5643242), (10, 2821621), (11, 2565110), (22, 1282555), (55, 513022), (110, 256511), (199, 141790), (398, 70895), (995, 28358), (1289, 21890), (1990, 14179), (2189, 12890), (2578, 10945), (4378, 6445)]