21275340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2551}}^1$

素因数の和:2702

約数の個数: 48

約数和(自身を含む): 60023040

約数和(自身を除く): 38747700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 139, 278, 417, 556, 695, 834, 1390, 1668, 2085, 2551, 2780, 4170, 5102, 7653, 8340, 10204, 12755, 15306, 25510, 30612, 38265, 51020, 76530, 153060, 354589, 709178, 1063767, 1418356, 1772945, 2127534, 3545890, 4255068, 5318835, 7091780, 10637670, 21275340]

約数ペア:

[(1, 21275340), (2, 10637670), (3, 7091780), (4, 5318835), (5, 4255068), (6, 3545890), (10, 2127534), (12, 1772945), (15, 1418356), (20, 1063767), (30, 709178), (60, 354589), (139, 153060), (278, 76530), (417, 51020), (556, 38265), (695, 30612), (834, 25510), (1390, 15306), (1668, 12755), (2085, 10204), (2551, 8340), (2780, 7653), (4170, 5102)]