20068503

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:168

約数の個数: 64

約数和(自身を含む): 35804160

約数和(自身を除く): 15735657

約数列:

[1, 3, 7, 13, 19, 21, 39, 53, 57, 73, 91, 133, 159, 219, 247, 273, 371, 399, 511, 689, 741, 949, 1007, 1113, 1387, 1533, 1729, 2067, 2847, 3021, 3869, 4161, 4823, 5187, 6643, 7049, 9709, 11607, 13091, 14469, 18031, 19929, 21147, 27083, 29127, 39273, 50297, 54093, 73511, 81249, 91637, 126217, 150891, 220533, 274911, 352079, 378651, 514577, 955643, 1056237, 1543731, 2866929, 6689501, 20068503]

約数ペア:

[(1, 20068503), (3, 6689501), (7, 2866929), (13, 1543731), (19, 1056237), (21, 955643), (39, 514577), (53, 378651), (57, 352079), (73, 274911), (91, 220533), (133, 150891), (159, 126217), (219, 91637), (247, 81249), (273, 73511), (371, 54093), (399, 50297), (511, 39273), (689, 29127), (741, 27083), (949, 21147), (1007, 19929), (1113, 18031), (1387, 14469), (1533, 13091), (1729, 11607), (2067, 9709), (2847, 7049), (3021, 6643), (3869, 5187), (4161, 4823)]