21005578

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41513}}^1$

素因数の和:41549

約数の個数: 16

約数和(自身を含む): 35868096

約数和(自身を除く): 14862518

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 41513, 83026, 456643, 913286, 954799, 1909598, 10502789, 21005578]

約数ペア:

[(1, 21005578), (2, 10502789), (11, 1909598), (22, 954799), (23, 913286), (46, 456643), (253, 83026), (506, 41513)]