81867807

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:293

約数の個数: 64

約数和(自身を含む): 145612800

約数和(自身を除く): 63744993

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 89, 93, 157, 189, 217, 267, 279, 471, 623, 651, 801, 837, 1099, 1413, 1869, 1953, 2403, 2759, 3297, 4239, 4867, 5607, 5859, 8277, 9891, 13973, 14601, 16821, 19313, 24831, 29673, 34069, 41919, 43803, 57939, 74493, 97811, 102207, 125757, 131409, 173817, 293433, 306621, 377271, 433163, 521451, 880299, 919863, 1299489, 2640897, 3032141, 3898467, 9096423, 11695401, 27289269, 81867807]

約数ペア:

[(1, 81867807), (3, 27289269), (7, 11695401), (9, 9096423), (21, 3898467), (27, 3032141), (31, 2640897), (63, 1299489), (89, 919863), (93, 880299), (157, 521451), (189, 433163), (217, 377271), (267, 306621), (279, 293433), (471, 173817), (623, 131409), (651, 125757), (801, 102207), (837, 97811), (1099, 74493), (1413, 57939), (1869, 43803), (1953, 41919), (2403, 34069), (2759, 29673), (3297, 24831), (4239, 19313), (4867, 16821), (5607, 14601), (5859, 13973), (8277, 9891)]