81313390

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{1409}}^1$

素因数の和:1644

約数の個数: 32

約数和(自身を含む): 152280000

約数和(自身を除く): 70966610

約数列:

[1, 2, 5, 10, 29, 58, 145, 199, 290, 398, 995, 1409, 1990, 2818, 5771, 7045, 11542, 14090, 28855, 40861, 57710, 81722, 204305, 280391, 408610, 560782, 1401955, 2803910, 8131339, 16262678, 40656695, 81313390]

約数ペア:

[(1, 81313390), (2, 40656695), (5, 16262678), (10, 8131339), (29, 2803910), (58, 1401955), (145, 560782), (199, 408610), (290, 280391), (398, 204305), (995, 81722), (1409, 57710), (1990, 40861), (2818, 28855), (5771, 14090), (7045, 11542)]