21523236

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{997}}^1$

素因数の和:1268

約数の個数: 48

約数和(自身を含む): 57676416

約数和(自身を除く): 36153180

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 257, 514, 771, 997, 1028, 1542, 1799, 1994, 2991, 3084, 3598, 3988, 5397, 5982, 6979, 7196, 10794, 11964, 13958, 20937, 21588, 27916, 41874, 83748, 256229, 512458, 768687, 1024916, 1537374, 1793603, 3074748, 3587206, 5380809, 7174412, 10761618, 21523236]

約数ペア:

[(1, 21523236), (2, 10761618), (3, 7174412), (4, 5380809), (6, 3587206), (7, 3074748), (12, 1793603), (14, 1537374), (21, 1024916), (28, 768687), (42, 512458), (84, 256229), (257, 83748), (514, 41874), (771, 27916), (997, 21588), (1028, 20937), (1542, 13958), (1799, 11964), (1994, 10794), (2991, 7196), (3084, 6979), (3598, 5982), (3988, 5397)]