21270645

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{443}}^1$

素因数の和:562

約数の個数: 48

約数和(自身を含む): 40727232

約数和(自身を除く): 19456587

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 97, 99, 165, 291, 443, 485, 495, 873, 1067, 1329, 1455, 2215, 3201, 3987, 4365, 4873, 5335, 6645, 9603, 14619, 16005, 19935, 24365, 42971, 43857, 48015, 73095, 128913, 214855, 219285, 386739, 472681, 644565, 1418043, 1933695, 2363405, 4254129, 7090215, 21270645]

約数ペア:

[(1, 21270645), (3, 7090215), (5, 4254129), (9, 2363405), (11, 1933695), (15, 1418043), (33, 644565), (45, 472681), (55, 386739), (97, 219285), (99, 214855), (165, 128913), (291, 73095), (443, 48015), (485, 43857), (495, 42971), (873, 24365), (1067, 19935), (1329, 16005), (1455, 14619), (2215, 9603), (3201, 6645), (3987, 5335), (4365, 4873)]