199987984

素因数分解:

$2^4\times 7^1\times {\mathrm{89}}^1\times {\mathrm{20063}}^1$

素因数の和:20167

約数の個数: 40

約数和(自身を含む): 447828480

約数和(自身を除く): 247840496

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 89, 112, 178, 356, 623, 712, 1246, 1424, 2492, 4984, 9968, 20063, 40126, 80252, 140441, 160504, 280882, 321008, 561764, 1123528, 1785607, 2247056, 3571214, 7142428, 12499249, 14284856, 24998498, 28569712, 49996996, 99993992, 199987984]

約数ペア:

[(1, 199987984), (2, 99993992), (4, 49996996), (7, 28569712), (8, 24998498), (14, 14284856), (16, 12499249), (28, 7142428), (56, 3571214), (89, 2247056), (112, 1785607), (178, 1123528), (356, 561764), (623, 321008), (712, 280882), (1246, 160504), (1424, 140441), (2492, 80252), (4984, 40126), (9968, 20063)]