18837921

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:273

約数の個数: 32

約数和(自身を含む): 27907200

約数和(自身を除く): 9069279

約数列:

[1, 3, 17, 37, 51, 67, 111, 149, 201, 447, 629, 1139, 1887, 2479, 2533, 3417, 5513, 7437, 7599, 9983, 16539, 29949, 42143, 93721, 126429, 169711, 281163, 369371, 509133, 1108113, 6279307, 18837921]

約数ペア:

[(1, 18837921), (3, 6279307), (17, 1108113), (37, 509133), (51, 369371), (67, 281163), (111, 169711), (149, 126429), (201, 93721), (447, 42143), (629, 29949), (1139, 16539), (1887, 9983), (2479, 7599), (2533, 7437), (3417, 5513)]