21081354

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{4691}}^1$

素因数の和:4810

約数の個数: 32

約数和(自身を含む): 48646656

約数和(自身を除く): 27565302

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 107, 214, 321, 642, 749, 1498, 2247, 4494, 4691, 9382, 14073, 28146, 32837, 65674, 98511, 197022, 501937, 1003874, 1505811, 3011622, 3513559, 7027118, 10540677, 21081354]

約数ペア:

[(1, 21081354), (2, 10540677), (3, 7027118), (6, 3513559), (7, 3011622), (14, 1505811), (21, 1003874), (42, 501937), (107, 197022), (214, 98511), (321, 65674), (642, 32837), (749, 28146), (1498, 14073), (2247, 9382), (4494, 4691)]