81379539

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^2$

素因数の和:181

約数の個数: 48

約数和(自身を含む): 130552800

約数和(自身を除く): 49173261

約数列:

[1, 3, 9, 27, 29, 37, 53, 87, 111, 159, 261, 333, 477, 783, 999, 1073, 1431, 1537, 1961, 2809, 3219, 4611, 5883, 8427, 9657, 13833, 17649, 25281, 28971, 41499, 52947, 56869, 75843, 81461, 103933, 170607, 244383, 311799, 511821, 733149, 935397, 1535463, 2199447, 2806191, 3014057, 9042171, 27126513, 81379539]

約数ペア:

[(1, 81379539), (3, 27126513), (9, 9042171), (27, 3014057), (29, 2806191), (37, 2199447), (53, 1535463), (87, 935397), (111, 733149), (159, 511821), (261, 311799), (333, 244383), (477, 170607), (783, 103933), (999, 81461), (1073, 75843), (1431, 56869), (1537, 52947), (1961, 41499), (2809, 28971), (3219, 25281), (4611, 17649), (5883, 13833), (8427, 9657)]