20782240

素因数分解:

$2^5\times 5^1\times {\mathrm{193}}^1\times {\mathrm{673}}^1$

素因数の和:881

約数の個数: 48

約数和(自身を含む): 49425768

約数和(自身を除く): 28643528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 193, 386, 673, 772, 965, 1346, 1544, 1930, 2692, 3088, 3365, 3860, 5384, 6176, 6730, 7720, 10768, 13460, 15440, 21536, 26920, 30880, 53840, 107680, 129889, 259778, 519556, 649445, 1039112, 1298890, 2078224, 2597780, 4156448, 5195560, 10391120, 20782240]

約数ペア:

[(1, 20782240), (2, 10391120), (4, 5195560), (5, 4156448), (8, 2597780), (10, 2078224), (16, 1298890), (20, 1039112), (32, 649445), (40, 519556), (80, 259778), (160, 129889), (193, 107680), (386, 53840), (673, 30880), (772, 26920), (965, 21536), (1346, 15440), (1544, 13460), (1930, 10768), (2692, 7720), (3088, 6730), (3365, 6176), (3860, 5384)]