19806488

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{103}}^1$

素因数の和:208

約数の個数: 48

約数和(自身を含む): 41343120

約数和(自身を除く): 21536632

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 103, 104, 172, 206, 344, 412, 559, 824, 1118, 1339, 1849, 2236, 2678, 3698, 4429, 4472, 5356, 7396, 8858, 10712, 14792, 17716, 24037, 35432, 48074, 57577, 96148, 115154, 190447, 192296, 230308, 380894, 460616, 761788, 1523576, 2475811, 4951622, 9903244, 19806488]

約数ペア:

[(1, 19806488), (2, 9903244), (4, 4951622), (8, 2475811), (13, 1523576), (26, 761788), (43, 460616), (52, 380894), (86, 230308), (103, 192296), (104, 190447), (172, 115154), (206, 96148), (344, 57577), (412, 48074), (559, 35432), (824, 24037), (1118, 17716), (1339, 14792), (1849, 10712), (2236, 8858), (2678, 7396), (3698, 5356), (4429, 4472)]