21922733

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{421}}^1$

素因数の和:644

約数の個数: 16

約数和(自身を含む): 25846656

約数和(自身を除く): 3923923

約数列:

[1, 7, 43, 173, 301, 421, 1211, 2947, 7439, 18103, 52073, 72833, 126721, 509831, 3131819, 21922733]

約数ペア:

[(1, 21922733), (7, 3131819), (43, 509831), (173, 126721), (301, 72833), (421, 52073), (1211, 18103), (2947, 7439)]