81328120

素因数分解:

$2^3\times 5^1\times {\mathrm{2033203}}^1$

素因数の和:2033214

約数の個数: 16

約数和(自身を含む): 182988360

約数和(自身を除く): 101660240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2033203, 4066406, 8132812, 10166015, 16265624, 20332030, 40664060, 81328120]

約数ペア:

[(1, 81328120), (2, 40664060), (4, 20332030), (5, 16265624), (8, 10166015), (10, 8132812), (20, 4066406), (40, 2033203)]