20178081

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{2647}}^1$

素因数の和:2682

約数の個数: 36

約数和(自身を含む): 36627136

約数和(自身を除く): 16449055

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 121, 231, 363, 693, 847, 1089, 2541, 2647, 7623, 7941, 18529, 23823, 29117, 55587, 87351, 166761, 203819, 262053, 320287, 611457, 960861, 1834371, 2242009, 2882583, 6726027, 20178081]

約数ペア:

[(1, 20178081), (3, 6726027), (7, 2882583), (9, 2242009), (11, 1834371), (21, 960861), (33, 611457), (63, 320287), (77, 262053), (99, 203819), (121, 166761), (231, 87351), (363, 55587), (693, 29117), (847, 23823), (1089, 18529), (2541, 7941), (2647, 7623)]