21909755

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{701}}^1$

素因数の和:779

約数の個数: 32

約数和(自身を含む): 32348160

約数和(自身を除く): 10438405

約数列:

[1, 5, 7, 19, 35, 47, 95, 133, 235, 329, 665, 701, 893, 1645, 3505, 4465, 4907, 6251, 13319, 24535, 31255, 32947, 66595, 93233, 164735, 230629, 466165, 625993, 1153145, 3129965, 4381951, 21909755]

約数ペア:

[(1, 21909755), (5, 4381951), (7, 3129965), (19, 1153145), (35, 625993), (47, 466165), (95, 230629), (133, 164735), (235, 93233), (329, 66595), (665, 32947), (701, 31255), (893, 24535), (1645, 13319), (3505, 6251), (4465, 4907)]