21715756

素因数分解:

$2^2\times {\mathrm{61}}^2\times {\mathrm{1459}}^1$

素因数の和:1585

約数の個数: 18

約数和(自身を含む): 38662260

約数和(自身を除く): 16946504

約数列:

[1, 2, 4, 61, 122, 244, 1459, 2918, 3721, 5836, 7442, 14884, 88999, 177998, 355996, 5428939, 10857878, 21715756]

約数ペア:

[(1, 21715756), (2, 10857878), (4, 5428939), (61, 355996), (122, 177998), (244, 88999), (1459, 14884), (2918, 7442), (3721, 5836)]