81215721

素因数分解:

$3^2\times {\mathrm{1439}}^1\times {\mathrm{6271}}^1$

素因数の和:7716

約数の個数: 12

約数和(自身を含む): 117411840

約数和(自身を除く): 36196119

約数列:

[1, 3, 9, 1439, 4317, 6271, 12951, 18813, 56439, 9023969, 27071907, 81215721]

約数ペア:

[(1, 81215721), (3, 27071907), (9, 9023969), (1439, 56439), (4317, 18813), (6271, 12951)]