19905712

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{9497}}^1$

素因数の和:9636

約数の個数: 20

約数和(自身を含む): 38865816

約数和(自身を除く): 18960104

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 9497, 18994, 37988, 75976, 151952, 1244107, 2488214, 4976428, 9952856, 19905712]

約数ペア:

[(1, 19905712), (2, 9952856), (4, 4976428), (8, 2488214), (16, 1244107), (131, 151952), (262, 75976), (524, 37988), (1048, 18994), (2096, 9497)]