1721640447

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{898091}}^1$

素因数の和:898171

約数の個数: 16

約数和(自身を含む): 2586504960

約数和(自身を除く): 864864513

約数列:

[1, 3, 9, 27, 71, 213, 639, 1917, 898091, 2694273, 8082819, 24248457, 63764461, 191293383, 573880149, 1721640447]

約数ペア:

[(1, 1721640447), (3, 573880149), (9, 191293383), (27, 63764461), (71, 24248457), (213, 8082819), (639, 2694273), (1917, 898091)]