20761040

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1867}}^1$

素因数の和:2019

約数の個数: 40

約数和(自身を含む): 48642720

約数和(自身を除く): 27881680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 1867, 2224, 2780, 3734, 5560, 7468, 9335, 11120, 14936, 18670, 29872, 37340, 74680, 149360, 259513, 519026, 1038052, 1297565, 2076104, 2595130, 4152208, 5190260, 10380520, 20761040]

約数ペア:

[(1, 20761040), (2, 10380520), (4, 5190260), (5, 4152208), (8, 2595130), (10, 2076104), (16, 1297565), (20, 1038052), (40, 519026), (80, 259513), (139, 149360), (278, 74680), (556, 37340), (695, 29872), (1112, 18670), (1390, 14936), (1867, 11120), (2224, 9335), (2780, 7468), (3734, 5560)]