81259390

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{427681}}^1$

素因数の和:427707

約数の個数: 16

約数和(自身を含む): 153965520

約数和(自身を除く): 72706130

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 427681, 855362, 2138405, 4276810, 8125939, 16251878, 40629695, 81259390]

約数ペア:

[(1, 81259390), (2, 40629695), (5, 16251878), (10, 8125939), (19, 4276810), (38, 2138405), (95, 855362), (190, 427681)]