21091686

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{643}}^1$

素因数の和:737

約数の個数: 64

約数和(自身を含む): 53415936

約数和(自身を除く): 32324250

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 71, 77, 142, 154, 213, 231, 426, 462, 497, 643, 781, 994, 1286, 1491, 1562, 1929, 2343, 2982, 3858, 4501, 4686, 5467, 7073, 9002, 10934, 13503, 14146, 16401, 21219, 27006, 32802, 42438, 45653, 49511, 91306, 99022, 136959, 148533, 273918, 297066, 319571, 502183, 639142, 958713, 1004366, 1506549, 1917426, 3013098, 3515281, 7030562, 10545843, 21091686]

約数ペア:

[(1, 21091686), (2, 10545843), (3, 7030562), (6, 3515281), (7, 3013098), (11, 1917426), (14, 1506549), (21, 1004366), (22, 958713), (33, 639142), (42, 502183), (66, 319571), (71, 297066), (77, 273918), (142, 148533), (154, 136959), (213, 99022), (231, 91306), (426, 49511), (462, 45653), (497, 42438), (643, 32802), (781, 27006), (994, 21219), (1286, 16401), (1491, 14146), (1562, 13503), (1929, 10934), (2343, 9002), (2982, 7073), (3858, 5467), (4501, 4686)]