20684538

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{54721}}^1$

素因数の和:54739

約数の個数: 32

約数和(自身を含む): 52533120

約数和(自身を除く): 31848582

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 189, 378, 54721, 109442, 164163, 328326, 383047, 492489, 766094, 984978, 1149141, 1477467, 2298282, 2954934, 3447423, 6894846, 10342269, 20684538]

約数ペア:

[(1, 20684538), (2, 10342269), (3, 6894846), (6, 3447423), (7, 2954934), (9, 2298282), (14, 1477467), (18, 1149141), (21, 984978), (27, 766094), (42, 492489), (54, 383047), (63, 328326), (126, 164163), (189, 109442), (378, 54721)]