21137555859

素因数分解:

$3^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{149}}^1\times {\mathrm{9949}}^1$

素因数の和:10212

約数の個数: 48

約数和(自身を含む): 33348420000

約数和(自身を除く): 12210864141

約数列:

[1, 3, 7, 21, 49, 97, 147, 149, 291, 447, 679, 1043, 2037, 3129, 4753, 7301, 9949, 14259, 14453, 21903, 29847, 43359, 69643, 101171, 208929, 303513, 487501, 708197, 965053, 1462503, 1482401, 2124591, 2895159, 4447203, 6755371, 10376807, 20266113, 31130421, 47287597, 72637649, 141862791, 143792897, 217912947, 431378691, 1006550279, 3019650837, 7045851953, 21137555859]

約数ペア:

[(1, 21137555859), (3, 7045851953), (7, 3019650837), (21, 1006550279), (49, 431378691), (97, 217912947), (147, 143792897), (149, 141862791), (291, 72637649), (447, 47287597), (679, 31130421), (1043, 20266113), (2037, 10376807), (3129, 6755371), (4753, 4447203), (7301, 2895159), (9949, 2124591), (14259, 1482401), (14453, 1462503), (21903, 965053), (29847, 708197), (43359, 487501), (69643, 303513), (101171, 208929)]