21269061

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:208

約数の個数: 48

約数和(自身を含む): 35555520

約数和(自身を除く): 14286459

約数列:

[1, 3, 9, 11, 27, 33, 73, 81, 99, 109, 219, 243, 297, 327, 657, 803, 891, 981, 1199, 1971, 2409, 2673, 2943, 3597, 5913, 7227, 7957, 8829, 10791, 17739, 21681, 23871, 26487, 32373, 65043, 71613, 87527, 97119, 195129, 214839, 262581, 291357, 644517, 787743, 1933551, 2363229, 7089687, 21269061]

約数ペア:

[(1, 21269061), (3, 7089687), (9, 2363229), (11, 1933551), (27, 787743), (33, 644517), (73, 291357), (81, 262581), (99, 214839), (109, 195129), (219, 97119), (243, 87527), (297, 71613), (327, 65043), (657, 32373), (803, 26487), (891, 23871), (981, 21681), (1199, 17739), (1971, 10791), (2409, 8829), (2673, 7957), (2943, 7227), (3597, 5913)]