21407638

素因数分解:

$2^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{7247}}^1$

素因数の和:7467

約数の個数: 16

約数和(自身を含む): 36877824

約数和(自身を除く): 15470186

約数列:

[1, 2, 7, 14, 211, 422, 1477, 2954, 7247, 14494, 50729, 101458, 1529117, 3058234, 10703819, 21407638]

約数ペア:

[(1, 21407638), (2, 10703819), (7, 3058234), (14, 1529117), (211, 101458), (422, 50729), (1477, 14494), (2954, 7247)]