249739021

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{499}}^1$

素因数の和:649

約数の個数: 32

約数和(自身を含む): 311040000

約数和(自身を除く): 61300979

約数列:

[1, 7, 19, 53, 71, 133, 371, 497, 499, 1007, 1349, 3493, 3763, 7049, 9443, 9481, 26341, 26447, 35429, 66367, 71497, 185129, 248003, 500479, 502493, 673151, 1877737, 3517451, 4712057, 13144159, 35677003, 249739021]

約数ペア:

[(1, 249739021), (7, 35677003), (19, 13144159), (53, 4712057), (71, 3517451), (133, 1877737), (371, 673151), (497, 502493), (499, 500479), (1007, 248003), (1349, 185129), (3493, 71497), (3763, 66367), (7049, 35429), (9443, 26447), (9481, 26341)]