21887943

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4987}}^1$

素因数の和:5027

約数の個数: 32

約数和(自身を含む): 38307840

約数和(自身を除く): 16419897

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 77, 133, 209, 231, 399, 627, 1463, 4389, 4987, 14961, 34909, 54857, 94753, 104727, 164571, 284259, 383999, 663271, 1042283, 1151997, 1989813, 3126849, 7295981, 21887943]

約数ペア:

[(1, 21887943), (3, 7295981), (7, 3126849), (11, 1989813), (19, 1151997), (21, 1042283), (33, 663271), (57, 383999), (77, 284259), (133, 164571), (209, 104727), (231, 94753), (399, 54857), (627, 34909), (1463, 14961), (4389, 4987)]