21005418

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1931}}^1$

素因数の和:1987

約数の個数: 48

約数和(自身を含む): 50216544

約数和(自身を除く): 29211126

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 49, 74, 98, 111, 147, 222, 259, 294, 518, 777, 1554, 1813, 1931, 3626, 3862, 5439, 5793, 10878, 11586, 13517, 27034, 40551, 71447, 81102, 94619, 142894, 189238, 214341, 283857, 428682, 500129, 567714, 1000258, 1500387, 3000774, 3500903, 7001806, 10502709, 21005418]

約数ペア:

[(1, 21005418), (2, 10502709), (3, 7001806), (6, 3500903), (7, 3000774), (14, 1500387), (21, 1000258), (37, 567714), (42, 500129), (49, 428682), (74, 283857), (98, 214341), (111, 189238), (147, 142894), (222, 94619), (259, 81102), (294, 71447), (518, 40551), (777, 27034), (1554, 13517), (1813, 11586), (1931, 10878), (3626, 5793), (3862, 5439)]