21557042

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{5281}}^1$

素因数の和:5453

約数の個数: 16

約数和(自身を含む): 35051352

約数和(自身を除く): 13494310

約数列:

[1, 2, 13, 26, 157, 314, 2041, 4082, 5281, 10562, 68653, 137306, 829117, 1658234, 10778521, 21557042]

約数ペア:

[(1, 21557042), (2, 10778521), (13, 1658234), (26, 829117), (157, 137306), (314, 68653), (2041, 10562), (4082, 5281)]