21091812

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{1301}}^1$

素因数の和:1508

約数の個数: 48

約数和(自身を含む): 56579712

約数和(自身を除く): 35487900

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 193, 386, 579, 772, 1158, 1301, 1351, 2316, 2602, 2702, 3903, 4053, 5204, 5404, 7806, 8106, 9107, 15612, 16212, 18214, 27321, 36428, 54642, 109284, 251093, 502186, 753279, 1004372, 1506558, 1757651, 3013116, 3515302, 5272953, 7030604, 10545906, 21091812]

約数ペア:

[(1, 21091812), (2, 10545906), (3, 7030604), (4, 5272953), (6, 3515302), (7, 3013116), (12, 1757651), (14, 1506558), (21, 1004372), (28, 753279), (42, 502186), (84, 251093), (193, 109284), (386, 54642), (579, 36428), (772, 27321), (1158, 18214), (1301, 16212), (1351, 15612), (2316, 9107), (2602, 8106), (2702, 7806), (3903, 5404), (4053, 5204)]