21092008

素因数分解:

$2^3\times 7^1\times {\mathrm{157}}^1\times {\mathrm{2399}}^1$

素因数の和:2569

約数の個数: 32

約数和(自身を含む): 45504000

約数和(自身を除く): 24411992

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 157, 314, 628, 1099, 1256, 2198, 2399, 4396, 4798, 8792, 9596, 16793, 19192, 33586, 67172, 134344, 376643, 753286, 1506572, 2636501, 3013144, 5273002, 10546004, 21092008]

約数ペア:

[(1, 21092008), (2, 10546004), (4, 5273002), (7, 3013144), (8, 2636501), (14, 1506572), (28, 753286), (56, 376643), (157, 134344), (314, 67172), (628, 33586), (1099, 19192), (1256, 16793), (2198, 9596), (2399, 8792), (4396, 4798)]