280291921

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1\times {\mathrm{307}}^1$

素因数の和:533

約数の個数: 32

約数和(自身を含む): 353239040

約数和(自身を除く): 72947119

約数列:

[1, 7, 13, 79, 91, 127, 307, 553, 889, 1027, 1651, 2149, 3991, 7189, 10033, 11557, 24253, 27937, 38989, 70231, 130429, 169771, 272923, 315289, 506857, 913003, 2207023, 3080131, 3547999, 21560917, 40041703, 280291921]

約数ペア:

[(1, 280291921), (7, 40041703), (13, 21560917), (79, 3547999), (91, 3080131), (127, 2207023), (307, 913003), (553, 506857), (889, 315289), (1027, 272923), (1651, 169771), (2149, 130429), (3991, 70231), (7189, 38989), (10033, 27937), (11557, 24253)]