12640971

素因数分解:

$3^1\times 7^2\times {\mathrm{113}}^1\times {\mathrm{761}}^1$

素因数の和:891

約数の個数: 24

約数和(自身を含む): 19805904

約数和(自身を除く): 7164933

約数列:

[1, 3, 7, 21, 49, 113, 147, 339, 761, 791, 2283, 2373, 5327, 5537, 15981, 16611, 37289, 85993, 111867, 257979, 601951, 1805853, 4213657, 12640971]

約数ペア:

[(1, 12640971), (3, 4213657), (7, 1805853), (21, 601951), (49, 257979), (113, 111867), (147, 85993), (339, 37289), (761, 16611), (791, 15981), (2283, 5537), (2373, 5327)]