12780018

素因数分解:

$2^1\times 3^4\times {\mathrm{78889}}^1$

素因数の和:78903

約数の個数: 20

約数和(自身を含む): 28637070

約数和(自身を除く): 15857052

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 78889, 157778, 236667, 473334, 710001, 1420002, 2130003, 4260006, 6390009, 12780018]

約数ペア:

[(1, 12780018), (2, 6390009), (3, 4260006), (6, 2130003), (9, 1420002), (18, 710001), (27, 473334), (54, 236667), (81, 157778), (162, 78889)]