20528088

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1721}}^1$

素因数の和:1808

約数の個数: 64

約数和(自身を含む): 59512320

約数和(自身を除く): 38984232

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 71, 84, 142, 168, 213, 284, 426, 497, 568, 852, 994, 1491, 1704, 1721, 1988, 2982, 3442, 3976, 5163, 5964, 6884, 10326, 11928, 12047, 13768, 20652, 24094, 36141, 41304, 48188, 72282, 96376, 122191, 144564, 244382, 289128, 366573, 488764, 733146, 855337, 977528, 1466292, 1710674, 2566011, 2932584, 3421348, 5132022, 6842696, 10264044, 20528088]

約数ペア:

[(1, 20528088), (2, 10264044), (3, 6842696), (4, 5132022), (6, 3421348), (7, 2932584), (8, 2566011), (12, 1710674), (14, 1466292), (21, 977528), (24, 855337), (28, 733146), (42, 488764), (56, 366573), (71, 289128), (84, 244382), (142, 144564), (168, 122191), (213, 96376), (284, 72282), (426, 48188), (497, 41304), (568, 36141), (852, 24094), (994, 20652), (1491, 13768), (1704, 12047), (1721, 11928), (1988, 10326), (2982, 6884), (3442, 5964), (3976, 5163)]