21187394816

素因数分解:

$2^8\times 7^1\times {\mathrm{43}}^1\times {\mathrm{274961}}^1$

素因数の和:275027

約数の個数: 72

約数和(自身を含む): 49457964864

約数和(自身を除く): 28270570048

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 43, 56, 64, 86, 112, 128, 172, 224, 256, 301, 344, 448, 602, 688, 896, 1204, 1376, 1792, 2408, 2752, 4816, 5504, 9632, 11008, 19264, 38528, 77056, 274961, 549922, 1099844, 1924727, 2199688, 3849454, 4399376, 7698908, 8798752, 11823323, 15397816, 17597504, 23646646, 30795632, 35195008, 47293292, 61591264, 70390016, 82763261, 94586584, 123182528, 165526522, 189173168, 246365056, 331053044, 378346336, 492730112, 662106088, 756692672, 1324212176, 1513385344, 2648424352, 3026770688, 5296848704, 10593697408, 21187394816]

約数ペア:

[(1, 21187394816), (2, 10593697408), (4, 5296848704), (7, 3026770688), (8, 2648424352), (14, 1513385344), (16, 1324212176), (28, 756692672), (32, 662106088), (43, 492730112), (56, 378346336), (64, 331053044), (86, 246365056), (112, 189173168), (128, 165526522), (172, 123182528), (224, 94586584), (256, 82763261), (301, 70390016), (344, 61591264), (448, 47293292), (602, 35195008), (688, 30795632), (896, 23646646), (1204, 17597504), (1376, 15397816), (1792, 11823323), (2408, 8798752), (2752, 7698908), (4816, 4399376), (5504, 3849454), (9632, 2199688), (11008, 1924727), (19264, 1099844), (38528, 549922), (77056, 274961)]