19941790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{911}}^1$

素因数の和:1128

約数の個数: 32

約数和(自身を含む): 39398400

約数和(自身を除く): 19456610

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 199, 398, 911, 995, 1822, 1990, 2189, 4378, 4555, 9110, 10021, 10945, 20042, 21890, 50105, 100210, 181289, 362578, 906445, 1812890, 1994179, 3988358, 9970895, 19941790]

約数ペア:

[(1, 19941790), (2, 9970895), (5, 3988358), (10, 1994179), (11, 1812890), (22, 906445), (55, 362578), (110, 181289), (199, 100210), (398, 50105), (911, 21890), (995, 20042), (1822, 10945), (1990, 10021), (2189, 9110), (4378, 4555)]