18637556

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{661}}^1$

素因数の和:744

約数の個数: 48

約数和(自身を含む): 40037760

約数和(自身を除く): 21400204

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 53, 76, 106, 133, 212, 266, 371, 532, 661, 742, 1007, 1322, 1484, 2014, 2644, 4028, 4627, 7049, 9254, 12559, 14098, 18508, 25118, 28196, 35033, 50236, 70066, 87913, 140132, 175826, 245231, 351652, 490462, 665627, 980924, 1331254, 2662508, 4659389, 9318778, 18637556]

約数ペア:

[(1, 18637556), (2, 9318778), (4, 4659389), (7, 2662508), (14, 1331254), (19, 980924), (28, 665627), (38, 490462), (53, 351652), (76, 245231), (106, 175826), (133, 140132), (212, 87913), (266, 70066), (371, 50236), (532, 35033), (661, 28196), (742, 25118), (1007, 18508), (1322, 14098), (1484, 12559), (2014, 9254), (2644, 7049), (4028, 4627)]