71828289

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{68213}}^1$

素因数の和:68238

約数の個数: 20

約数和(自身を含む): 115554516

約数和(自身を除く): 43726227

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 68213, 204639, 613917, 886769, 1841751, 2660307, 5525253, 7980921, 23942763, 71828289]

約数ペア:

[(1, 71828289), (3, 23942763), (9, 7980921), (13, 5525253), (27, 2660307), (39, 1841751), (81, 886769), (117, 613917), (351, 204639), (1053, 68213)]