81395181

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{587}}^1$

素因数の和:702

約数の個数: 48

約数和(自身を含む): 140894208

約数和(自身を除く): 59499027

約数列:

[1, 3, 7, 9, 21, 31, 63, 71, 93, 213, 217, 279, 497, 587, 639, 651, 1491, 1761, 1953, 2201, 4109, 4473, 5283, 6603, 12327, 15407, 18197, 19809, 36981, 41677, 46221, 54591, 125031, 127379, 138663, 163773, 291739, 375093, 382137, 875217, 1146411, 1291987, 2625651, 3875961, 9043909, 11627883, 27131727, 81395181]

約数ペア:

[(1, 81395181), (3, 27131727), (7, 11627883), (9, 9043909), (21, 3875961), (31, 2625651), (63, 1291987), (71, 1146411), (93, 875217), (213, 382137), (217, 375093), (279, 291739), (497, 163773), (587, 138663), (639, 127379), (651, 125031), (1491, 54591), (1761, 46221), (1953, 41677), (2201, 36981), (4109, 19809), (4473, 18197), (5283, 15407), (6603, 12327)]