21821168

素因数分解:

$2^4\times {\mathrm{103}}^1\times {\mathrm{13241}}^1$

素因数の和:13352

約数の個数: 20

約数和(自身を含む): 42692208

約数和(自身を除く): 20871040

約数列:

[1, 2, 4, 8, 16, 103, 206, 412, 824, 1648, 13241, 26482, 52964, 105928, 211856, 1363823, 2727646, 5455292, 10910584, 21821168]

約数ペア:

[(1, 21821168), (2, 10910584), (4, 5455292), (8, 2727646), (16, 1363823), (103, 211856), (206, 105928), (412, 52964), (824, 26482), (1648, 13241)]