16749621

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1999}}^1$

素因数の和:2038

約数の個数: 36

約数和(自身を含む): 29640000

約数和(自身を除く): 12890379

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 399, 441, 931, 1197, 1999, 2793, 5997, 8379, 13993, 17991, 37981, 41979, 97951, 113943, 125937, 265867, 293853, 341829, 797601, 881559, 1861069, 2392803, 5583207, 16749621]

約数ペア:

[(1, 16749621), (3, 5583207), (7, 2392803), (9, 1861069), (19, 881559), (21, 797601), (49, 341829), (57, 293853), (63, 265867), (133, 125937), (147, 113943), (171, 97951), (399, 41979), (441, 37981), (931, 17991), (1197, 13993), (1999, 8379), (2793, 5997)]