20987474

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{7699}}^1$

素因数の和:7777

約数の個数: 16

約数和(自身を含む): 33264000

約数和(自身を除く): 12276526

約数列:

[1, 2, 29, 47, 58, 94, 1363, 2726, 7699, 15398, 223271, 361853, 446542, 723706, 10493737, 20987474]

約数ペア:

[(1, 20987474), (2, 10493737), (29, 723706), (47, 446542), (58, 361853), (94, 223271), (1363, 15398), (2726, 7699)]