18709400

素因数分解:

$2^3\times 5^2\times {\mathrm{139}}^1\times {\mathrm{673}}^1$

素因数の和:828

約数の個数: 48

約数和(自身を含む): 43877400

約数和(自身を除く): 25168000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 139, 200, 278, 556, 673, 695, 1112, 1346, 1390, 2692, 2780, 3365, 3475, 5384, 5560, 6730, 6950, 13460, 13900, 16825, 26920, 27800, 33650, 67300, 93547, 134600, 187094, 374188, 467735, 748376, 935470, 1870940, 2338675, 3741880, 4677350, 9354700, 18709400]

約数ペア:

[(1, 18709400), (2, 9354700), (4, 4677350), (5, 3741880), (8, 2338675), (10, 1870940), (20, 935470), (25, 748376), (40, 467735), (50, 374188), (100, 187094), (139, 134600), (200, 93547), (278, 67300), (556, 33650), (673, 27800), (695, 26920), (1112, 16825), (1346, 13900), (1390, 13460), (2692, 6950), (2780, 6730), (3365, 5560), (3475, 5384)]