21180376

素因数分解:

$2^3\times 7^1\times {\mathrm{613}}^1\times {\mathrm{617}}^1$

素因数の和:1243

約数の個数: 32

約数和(自身を含む): 45534240

約数和(自身を除く): 24353864

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 613, 617, 1226, 1234, 2452, 2468, 4291, 4319, 4904, 4936, 8582, 8638, 17164, 17276, 34328, 34552, 378221, 756442, 1512884, 2647547, 3025768, 5295094, 10590188, 21180376]

約数ペア:

[(1, 21180376), (2, 10590188), (4, 5295094), (7, 3025768), (8, 2647547), (14, 1512884), (28, 756442), (56, 378221), (613, 34552), (617, 34328), (1226, 17276), (1234, 17164), (2452, 8638), (2468, 8582), (4291, 4936), (4319, 4904)]