81155921

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{193}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 104890368

約数和(自身を除く): 23734447

約数列:

[1, 7, 11, 43, 77, 127, 193, 301, 473, 889, 1351, 1397, 2123, 3311, 5461, 8299, 9779, 14861, 24511, 38227, 58093, 60071, 91289, 171577, 269621, 420497, 639023, 1053973, 1887347, 7377811, 11593703, 81155921]

約数ペア:

[(1, 81155921), (7, 11593703), (11, 7377811), (43, 1887347), (77, 1053973), (127, 639023), (193, 420497), (301, 269621), (473, 171577), (889, 91289), (1351, 60071), (1397, 58093), (2123, 38227), (3311, 24511), (5461, 14861), (8299, 9779)]