251428660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{4391}}^1$

素因数の和:4816

約数の個数: 48

約数和(自身を含む): 605041920

約数和(自身を除く): 353613260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 409, 818, 1636, 2045, 2863, 4090, 4391, 5726, 8180, 8782, 11452, 14315, 17564, 21955, 28630, 30737, 43910, 57260, 61474, 87820, 122948, 153685, 307370, 614740, 1795919, 3591838, 7183676, 8979595, 12571433, 17959190, 25142866, 35918380, 50285732, 62857165, 125714330, 251428660]

約数ペア:

[(1, 251428660), (2, 125714330), (4, 62857165), (5, 50285732), (7, 35918380), (10, 25142866), (14, 17959190), (20, 12571433), (28, 8979595), (35, 7183676), (70, 3591838), (140, 1795919), (409, 614740), (818, 307370), (1636, 153685), (2045, 122948), (2863, 87820), (4090, 61474), (4391, 57260), (5726, 43910), (8180, 30737), (8782, 28630), (11452, 21955), (14315, 17564)]