20120221165

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{797}}^1\times {\mathrm{4211}}^1$

素因数の和:5133

約数の個数: 32

約数和(自身を含む): 26620513920

約数和(自身を除く): 6500292755

約数列:

[1, 5, 11, 55, 109, 545, 797, 1199, 3985, 4211, 5995, 8767, 21055, 43835, 46321, 86873, 231605, 434365, 458999, 955603, 2294995, 3356167, 4778015, 5048989, 16780835, 25244945, 36917837, 184589185, 365822203, 1829111015, 4024044233, 20120221165]

約数ペア:

[(1, 20120221165), (5, 4024044233), (11, 1829111015), (55, 365822203), (109, 184589185), (545, 36917837), (797, 25244945), (1199, 16780835), (3985, 5048989), (4211, 4778015), (5995, 3356167), (8767, 2294995), (21055, 955603), (43835, 458999), (46321, 434365), (86873, 231605)]