18781193984

素因数分解:

$2^8\times 7^1\times {\mathrm{47}}^1\times {\mathrm{222991}}^1$

素因数の和:223061

約数の個数: 72

約数和(自身を含む): 43756382208

約数和(自身を除く): 24975188224

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 47, 56, 64, 94, 112, 128, 188, 224, 256, 329, 376, 448, 658, 752, 896, 1316, 1504, 1792, 2632, 3008, 5264, 6016, 10528, 12032, 21056, 42112, 84224, 222991, 445982, 891964, 1560937, 1783928, 3121874, 3567856, 6243748, 7135712, 10480577, 12487496, 14271424, 20961154, 24974992, 28542848, 41922308, 49949984, 57085696, 73364039, 83844616, 99899968, 146728078, 167689232, 199799936, 293456156, 335378464, 399599872, 586912312, 670756928, 1173824624, 1341513856, 2347649248, 2683027712, 4695298496, 9390596992, 18781193984]

約数ペア:

[(1, 18781193984), (2, 9390596992), (4, 4695298496), (7, 2683027712), (8, 2347649248), (14, 1341513856), (16, 1173824624), (28, 670756928), (32, 586912312), (47, 399599872), (56, 335378464), (64, 293456156), (94, 199799936), (112, 167689232), (128, 146728078), (188, 99899968), (224, 83844616), (256, 73364039), (329, 57085696), (376, 49949984), (448, 41922308), (658, 28542848), (752, 24974992), (896, 20961154), (1316, 14271424), (1504, 12487496), (1792, 10480577), (2632, 7135712), (3008, 6243748), (5264, 3567856), (6016, 3121874), (10528, 1783928), (12032, 1560937), (21056, 891964), (42112, 445982), (84224, 222991)]