21229887

素因数分解:

$3^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{1039}}^1$

素因数の和:1195

約数の個数: 24

約数和(自身を含む): 33196800

約数和(自身を除く): 11966913

約数列:

[1, 3, 7, 21, 49, 139, 147, 417, 973, 1039, 2919, 3117, 6811, 7273, 20433, 21819, 50911, 144421, 152733, 433263, 1010947, 3032841, 7076629, 21229887]

約数ペア:

[(1, 21229887), (3, 7076629), (7, 3032841), (21, 1010947), (49, 433263), (139, 152733), (147, 144421), (417, 50911), (973, 21819), (1039, 20433), (2919, 7273), (3117, 6811)]