21767109

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1123}}^1$

素因数の和:1217

約数の個数: 32

約数和(自身を含む): 36255744

約数和(自身を除く): 14488635

約数列:

[1, 3, 7, 13, 21, 39, 71, 91, 213, 273, 497, 923, 1123, 1491, 2769, 3369, 6461, 7861, 14599, 19383, 23583, 43797, 79733, 102193, 239199, 306579, 558131, 1036529, 1674393, 3109587, 7255703, 21767109]

約数ペア:

[(1, 21767109), (3, 7255703), (7, 3109587), (13, 1674393), (21, 1036529), (39, 558131), (71, 306579), (91, 239199), (213, 102193), (273, 79733), (497, 43797), (923, 23583), (1123, 19383), (1491, 14599), (2769, 7861), (3369, 6461)]