21808633

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{2647}}^1$

素因数の和:2772

約数の個数: 16

約数和(自身を含む): 27454464

約数和(自身を除く): 5645831

約数列:

[1, 7, 11, 77, 107, 749, 1177, 2647, 8239, 18529, 29117, 203819, 283229, 1982603, 3115519, 21808633]

約数ペア:

[(1, 21808633), (7, 3115519), (11, 1982603), (77, 283229), (107, 203819), (749, 29117), (1177, 18529), (2647, 8239)]