20909074

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1\times {\mathrm{643}}^1$

素因数の和:945

約数の個数: 16

約数和(自身を含む): 31993920

約数和(自身を除く): 11084846

約数列:

[1, 2, 71, 142, 229, 458, 643, 1286, 16259, 32518, 45653, 91306, 147247, 294494, 10454537, 20909074]

約数ペア:

[(1, 20909074), (2, 10454537), (71, 294494), (142, 147247), (229, 91306), (458, 45653), (643, 32518), (1286, 16259)]