51980120

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{643}}^1$

素因数の和:744

約数の個数: 64

約数和(自身を含む): 122411520

約数和(自身を除く): 70431400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 47, 86, 94, 172, 188, 215, 235, 344, 376, 430, 470, 643, 860, 940, 1286, 1720, 1880, 2021, 2572, 3215, 4042, 5144, 6430, 8084, 10105, 12860, 16168, 20210, 25720, 27649, 30221, 40420, 55298, 60442, 80840, 110596, 120884, 138245, 151105, 221192, 241768, 276490, 302210, 552980, 604420, 1105960, 1208840, 1299503, 2599006, 5198012, 6497515, 10396024, 12995030, 25990060, 51980120]

約数ペア:

[(1, 51980120), (2, 25990060), (4, 12995030), (5, 10396024), (8, 6497515), (10, 5198012), (20, 2599006), (40, 1299503), (43, 1208840), (47, 1105960), (86, 604420), (94, 552980), (172, 302210), (188, 276490), (215, 241768), (235, 221192), (344, 151105), (376, 138245), (430, 120884), (470, 110596), (643, 80840), (860, 60442), (940, 55298), (1286, 40420), (1720, 30221), (1880, 27649), (2021, 25720), (2572, 20210), (3215, 16168), (4042, 12860), (5144, 10105), (6430, 8084)]