354451880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{911}}^1$

素因数の和:1130

約数の個数: 64

約数和(自身を含む): 815546880

約数和(自身を除く): 461095000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 137, 142, 274, 284, 355, 548, 568, 685, 710, 911, 1096, 1370, 1420, 1822, 2740, 2840, 3644, 4555, 5480, 7288, 9110, 9727, 18220, 19454, 36440, 38908, 48635, 64681, 77816, 97270, 124807, 129362, 194540, 249614, 258724, 323405, 389080, 499228, 517448, 624035, 646810, 998456, 1248070, 1293620, 2496140, 2587240, 4992280, 8861297, 17722594, 35445188, 44306485, 70890376, 88612970, 177225940, 354451880]

約数ペア:

[(1, 354451880), (2, 177225940), (4, 88612970), (5, 70890376), (8, 44306485), (10, 35445188), (20, 17722594), (40, 8861297), (71, 4992280), (137, 2587240), (142, 2496140), (274, 1293620), (284, 1248070), (355, 998456), (548, 646810), (568, 624035), (685, 517448), (710, 499228), (911, 389080), (1096, 323405), (1370, 258724), (1420, 249614), (1822, 194540), (2740, 129362), (2840, 124807), (3644, 97270), (4555, 77816), (5480, 64681), (7288, 48635), (9110, 38908), (9727, 36440), (18220, 19454)]