81720640

素因数分解:

$2^6\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5939}}^1$

素因数の和:5999

約数の個数: 56

約数和(自身を含む): 199156320

約数和(自身を除く): 117435680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 160, 172, 215, 320, 344, 430, 688, 860, 1376, 1720, 2752, 3440, 5939, 6880, 11878, 13760, 23756, 29695, 47512, 59390, 95024, 118780, 190048, 237560, 255377, 380096, 475120, 510754, 950240, 1021508, 1276885, 1900480, 2043016, 2553770, 4086032, 5107540, 8172064, 10215080, 16344128, 20430160, 40860320, 81720640]

約数ペア:

[(1, 81720640), (2, 40860320), (4, 20430160), (5, 16344128), (8, 10215080), (10, 8172064), (16, 5107540), (20, 4086032), (32, 2553770), (40, 2043016), (43, 1900480), (64, 1276885), (80, 1021508), (86, 950240), (160, 510754), (172, 475120), (215, 380096), (320, 255377), (344, 237560), (430, 190048), (688, 118780), (860, 95024), (1376, 59390), (1720, 47512), (2752, 29695), (3440, 23756), (5939, 13760), (6880, 11878)]