21354494

素因数分解:

$2^1\times 7^4\times {\mathrm{4447}}^1$

素因数の和:4477

約数の個数: 20

約数和(自身を含む): 37376544

約数和(自身を除く): 16022050

約数列:

[1, 2, 7, 14, 49, 98, 343, 686, 2401, 4447, 4802, 8894, 31129, 62258, 217903, 435806, 1525321, 3050642, 10677247, 21354494]

約数ペア:

[(1, 21354494), (2, 10677247), (7, 3050642), (14, 1525321), (49, 435806), (98, 217903), (343, 62258), (686, 31129), (2401, 8894), (4447, 4802)]