12258860

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 26671680

約数和(自身を除く): 14412820

約数列:

[1, 2, 4, 5, 10, 20, 71, 89, 97, 142, 178, 194, 284, 355, 356, 388, 445, 485, 710, 890, 970, 1420, 1780, 1940, 6319, 6887, 8633, 12638, 13774, 17266, 25276, 27548, 31595, 34435, 34532, 43165, 63190, 68870, 86330, 126380, 137740, 172660, 612943, 1225886, 2451772, 3064715, 6129430, 12258860]

約数ペア:

[(1, 12258860), (2, 6129430), (4, 3064715), (5, 2451772), (10, 1225886), (20, 612943), (71, 172660), (89, 137740), (97, 126380), (142, 86330), (178, 68870), (194, 63190), (284, 43165), (355, 34532), (356, 34435), (388, 31595), (445, 27548), (485, 25276), (710, 17266), (890, 13774), (970, 12638), (1420, 8633), (1780, 6887), (1940, 6319)]