18605984

素因数分解:

$2^5\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:285

約数の個数: 48

約数和(自身を含む): 38102400

約数和(自身を除く): 19496416

約数列:

[1, 2, 4, 8, 16, 32, 47, 89, 94, 139, 178, 188, 278, 356, 376, 556, 712, 752, 1112, 1424, 1504, 2224, 2848, 4183, 4448, 6533, 8366, 12371, 13066, 16732, 24742, 26132, 33464, 49484, 52264, 66928, 98968, 104528, 133856, 197936, 209056, 395872, 581437, 1162874, 2325748, 4651496, 9302992, 18605984]

約数ペア:

[(1, 18605984), (2, 9302992), (4, 4651496), (8, 2325748), (16, 1162874), (32, 581437), (47, 395872), (89, 209056), (94, 197936), (139, 133856), (178, 104528), (188, 98968), (278, 66928), (356, 52264), (376, 49484), (556, 33464), (712, 26132), (752, 24742), (1112, 16732), (1424, 13066), (1504, 12371), (2224, 8366), (2848, 6533), (4183, 4448)]