21210966

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2371}}^1$

素因数の和:2457

約数の個数: 48

約数和(自身を含む): 53284608

約数和(自身を除く): 32073642

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 71, 126, 142, 213, 426, 497, 639, 994, 1278, 1491, 2371, 2982, 4473, 4742, 7113, 8946, 14226, 16597, 21339, 33194, 42678, 49791, 99582, 149373, 168341, 298746, 336682, 505023, 1010046, 1178387, 1515069, 2356774, 3030138, 3535161, 7070322, 10605483, 21210966]

約数ペア:

[(1, 21210966), (2, 10605483), (3, 7070322), (6, 3535161), (7, 3030138), (9, 2356774), (14, 1515069), (18, 1178387), (21, 1010046), (42, 505023), (63, 336682), (71, 298746), (126, 168341), (142, 149373), (213, 99582), (426, 49791), (497, 42678), (639, 33194), (994, 21339), (1278, 16597), (1491, 14226), (2371, 8946), (2982, 7113), (4473, 4742)]