18990081

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{433}}^1\times {\mathrm{443}}^1$

素因数の和:893

約数の個数: 24

約数和(自身を含む): 30060576

約数和(自身を除く): 11070495

約数列:

[1, 3, 9, 11, 33, 99, 433, 443, 1299, 1329, 3897, 3987, 4763, 4873, 14289, 14619, 42867, 43857, 191819, 575457, 1726371, 2110009, 6330027, 18990081]

約数ペア:

[(1, 18990081), (3, 6330027), (9, 2110009), (11, 1726371), (33, 575457), (99, 191819), (433, 43857), (443, 42867), (1299, 14619), (1329, 14289), (3897, 4873), (3987, 4763)]