21605818

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{9337}}^1$

素因数の和:9441

約数の個数: 16

約数和(自身を含む): 35297640

約数和(自身を除く): 13691822

約数列:

[1, 2, 13, 26, 89, 178, 1157, 2314, 9337, 18674, 121381, 242762, 830993, 1661986, 10802909, 21605818]

約数ペア:

[(1, 21605818), (2, 10802909), (13, 1661986), (26, 830993), (89, 242762), (178, 121381), (1157, 18674), (2314, 9337)]