21487816

素因数分解:

$2^3\times 7^1\times {\mathrm{353}}^1\times {\mathrm{1087}}^1$

素因数の和:1453

約数の個数: 32

約数和(自身を含む): 46218240

約数和(自身を除く): 24730424

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 353, 706, 1087, 1412, 2174, 2471, 2824, 4348, 4942, 7609, 8696, 9884, 15218, 19768, 30436, 60872, 383711, 767422, 1534844, 2685977, 3069688, 5371954, 10743908, 21487816]

約数ペア:

[(1, 21487816), (2, 10743908), (4, 5371954), (7, 3069688), (8, 2685977), (14, 1534844), (28, 767422), (56, 383711), (353, 60872), (706, 30436), (1087, 19768), (1412, 15218), (2174, 9884), (2471, 8696), (2824, 7609), (4348, 4942)]