20747800

素因数分解:

$2^3\times 5^2\times {\mathrm{227}}^1\times {\mathrm{457}}^1$

素因数の和:700

約数の個数: 48

約数和(自身を含む): 48557160

約数和(自身を除く): 27809360

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 227, 454, 457, 908, 914, 1135, 1816, 1828, 2270, 2285, 3656, 4540, 4570, 5675, 9080, 9140, 11350, 11425, 18280, 22700, 22850, 45400, 45700, 91400, 103739, 207478, 414956, 518695, 829912, 1037390, 2074780, 2593475, 4149560, 5186950, 10373900, 20747800]

約数ペア:

[(1, 20747800), (2, 10373900), (4, 5186950), (5, 4149560), (8, 2593475), (10, 2074780), (20, 1037390), (25, 829912), (40, 518695), (50, 414956), (100, 207478), (200, 103739), (227, 91400), (454, 45700), (457, 45400), (908, 22850), (914, 22700), (1135, 18280), (1816, 11425), (1828, 11350), (2270, 9140), (2285, 9080), (3656, 5675), (4540, 4570)]