28638687

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 49248000

約数和(自身を除く): 20609313

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 89, 147, 199, 231, 267, 539, 597, 623, 979, 1393, 1617, 1869, 2189, 2937, 4179, 4361, 6567, 6853, 9751, 13083, 15323, 17711, 20559, 29253, 45969, 47971, 53133, 107261, 123977, 143913, 194821, 321783, 371931, 584463, 867839, 1363747, 2603517, 4091241, 9546229, 28638687]

約数ペア:

[(1, 28638687), (3, 9546229), (7, 4091241), (11, 2603517), (21, 1363747), (33, 867839), (49, 584463), (77, 371931), (89, 321783), (147, 194821), (199, 143913), (231, 123977), (267, 107261), (539, 53133), (597, 47971), (623, 45969), (979, 29253), (1393, 20559), (1617, 17711), (1869, 15323), (2189, 13083), (2937, 9751), (4179, 6853), (4361, 6567)]