81978345

素因数分解:

$3^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{6823}}^1$

素因数の和:6926

約数の個数: 32

約数和(自身を含む): 147398400

約数和(自身を除く): 65420055

約数列:

[1, 3, 5, 9, 15, 27, 45, 89, 135, 267, 445, 801, 1335, 2403, 4005, 6823, 12015, 20469, 34115, 61407, 102345, 184221, 307035, 607247, 921105, 1821741, 3036235, 5465223, 9108705, 16395669, 27326115, 81978345]

約数ペア:

[(1, 81978345), (3, 27326115), (5, 16395669), (9, 9108705), (15, 5465223), (27, 3036235), (45, 1821741), (89, 921105), (135, 607247), (267, 307035), (445, 184221), (801, 102345), (1335, 61407), (2403, 34115), (4005, 20469), (6823, 12015)]