20938869

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{6271}}^1$

素因数の和:6337

約数の個数: 24

約数和(自身を含む): 35223552

約数和(自身を除く): 14284683

約数列:

[1, 3, 7, 9, 21, 53, 63, 159, 371, 477, 1113, 3339, 6271, 18813, 43897, 56439, 131691, 332363, 395073, 997089, 2326541, 2991267, 6979623, 20938869]

約数ペア:

[(1, 20938869), (3, 6979623), (7, 2991267), (9, 2326541), (21, 997089), (53, 395073), (63, 332363), (159, 131691), (371, 56439), (477, 43897), (1113, 18813), (3339, 6271)]