21743939

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:179

約数の個数: 32

約数和(自身を含む): 27371520

約数和(自身を除く): 5627581

約数列:

[1, 7, 29, 43, 47, 53, 203, 301, 329, 371, 1247, 1363, 1537, 2021, 2279, 2491, 8729, 9541, 10759, 14147, 15953, 17437, 58609, 66091, 72239, 107113, 410263, 462637, 505673, 749791, 3106277, 21743939]

約数ペア:

[(1, 21743939), (7, 3106277), (29, 749791), (43, 505673), (47, 462637), (53, 410263), (203, 107113), (301, 72239), (329, 66091), (371, 58609), (1247, 17437), (1363, 15953), (1537, 14147), (2021, 10759), (2279, 9541), (2491, 8729)]