2521281

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:189

約数の個数: 32

約数和(自身を含む): 4147200

約数和(自身を除く): 1625919

約数列:

[1, 3, 7, 19, 21, 57, 71, 89, 133, 213, 267, 399, 497, 623, 1349, 1491, 1691, 1869, 4047, 5073, 6319, 9443, 11837, 18957, 28329, 35511, 44233, 120061, 132699, 360183, 840427, 2521281]

約数ペア:

[(1, 2521281), (3, 840427), (7, 360183), (19, 132699), (21, 120061), (57, 44233), (71, 35511), (89, 28329), (133, 18957), (213, 11837), (267, 9443), (399, 6319), (497, 5073), (623, 4047), (1349, 1869), (1491, 1691)]