19384988

素因数分解:

$2^2\times 7^3\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:295

約数の個数: 48

約数和(自身を含む): 40320000

約数和(自身を除く): 20935012

約数列:

[1, 2, 4, 7, 14, 28, 49, 71, 98, 142, 196, 199, 284, 343, 398, 497, 686, 796, 994, 1372, 1393, 1988, 2786, 3479, 5572, 6958, 9751, 13916, 14129, 19502, 24353, 28258, 39004, 48706, 56516, 68257, 97412, 98903, 136514, 197806, 273028, 395612, 692321, 1384642, 2769284, 4846247, 9692494, 19384988]

約数ペア:

[(1, 19384988), (2, 9692494), (4, 4846247), (7, 2769284), (14, 1384642), (28, 692321), (49, 395612), (71, 273028), (98, 197806), (142, 136514), (196, 98903), (199, 97412), (284, 68257), (343, 56516), (398, 48706), (497, 39004), (686, 28258), (796, 24353), (994, 19502), (1372, 14129), (1393, 13916), (1988, 9751), (2786, 6958), (3479, 5572)]