257842977

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{4933}}^1$

素因数の和:5093

約数の個数: 32

約数和(自身を含む): 416824320

約数和(自身を除く): 158981343

約数列:

[1, 3, 7, 19, 21, 57, 131, 133, 393, 399, 917, 2489, 2751, 4933, 7467, 14799, 17423, 34531, 52269, 93727, 103593, 281181, 646223, 656089, 1938669, 1968267, 4523561, 12278237, 13570683, 36834711, 85947659, 257842977]

約数ペア:

[(1, 257842977), (3, 85947659), (7, 36834711), (19, 13570683), (21, 12278237), (57, 4523561), (131, 1968267), (133, 1938669), (393, 656089), (399, 646223), (917, 281181), (2489, 103593), (2751, 93727), (4933, 52269), (7467, 34531), (14799, 17423)]