199954960

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{80627}}^1$

素因数の和:80671

約数の個数: 40

約数和(自身を含む): 479897856

約数和(自身を除く): 279942896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 80627, 161254, 322508, 403135, 645016, 806270, 1290032, 1612540, 2499437, 3225080, 4998874, 6450160, 9997748, 12497185, 19995496, 24994370, 39990992, 49988740, 99977480, 199954960]

約数ペア:

[(1, 199954960), (2, 99977480), (4, 49988740), (5, 39990992), (8, 24994370), (10, 19995496), (16, 12497185), (20, 9997748), (31, 6450160), (40, 4998874), (62, 3225080), (80, 2499437), (124, 1612540), (155, 1290032), (248, 806270), (310, 645016), (496, 403135), (620, 322508), (1240, 161254), (2480, 80627)]