201213555

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{1987}}^1$

素因数の和:2195

約数の個数: 32

約数和(自身を含む): 331693824

約数和(自身を除く): 130480269

約数列:

[1, 3, 5, 15, 43, 129, 157, 215, 471, 645, 785, 1987, 2355, 5961, 6751, 9935, 20253, 29805, 33755, 85441, 101265, 256323, 311959, 427205, 935877, 1281615, 1559795, 4679385, 13414237, 40242711, 67071185, 201213555]

約数ペア:

[(1, 201213555), (3, 67071185), (5, 40242711), (15, 13414237), (43, 4679385), (129, 1559795), (157, 1281615), (215, 935877), (471, 427205), (645, 311959), (785, 256323), (1987, 101265), (2355, 85441), (5961, 33755), (6751, 29805), (9935, 20253)]