21545279

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{2309}}^1$

素因数の和:2390

約数の個数: 16

約数和(自身を含む): 26019840

約数和(自身を除く): 4474561

約数列:

[1, 7, 31, 43, 217, 301, 1333, 2309, 9331, 16163, 71579, 99287, 501053, 695009, 3077897, 21545279]

約数ペア:

[(1, 21545279), (7, 3077897), (31, 695009), (43, 501053), (217, 99287), (301, 71579), (1333, 16163), (2309, 9331)]