19720840321

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{2017}}^1\times {\mathrm{15349}}^1$

素因数の和:17393

約数の個数: 24

約数和(自身を含む): 24719087400

約数和(自身を除く): 4998247079

約数列:

[1, 7, 13, 49, 91, 637, 2017, 14119, 15349, 26221, 98833, 107443, 183547, 199537, 752101, 1284829, 1396759, 9777313, 30958933, 216712531, 402466129, 1516987717, 2817262903, 19720840321]

約数ペア:

[(1, 19720840321), (7, 2817262903), (13, 1516987717), (49, 402466129), (91, 216712531), (637, 30958933), (2017, 9777313), (14119, 1396759), (15349, 1284829), (26221, 752101), (98833, 199537), (107443, 183547)]