21010143

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4787}}^1$

素因数の和:4827

約数の個数: 32

約数和(自身を含む): 36771840

約数和(自身を除く): 15761697

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 77, 133, 209, 231, 399, 627, 1463, 4389, 4787, 14361, 33509, 52657, 90953, 100527, 157971, 272859, 368599, 636671, 1000483, 1105797, 1910013, 3001449, 7003381, 21010143]

約数ペア:

[(1, 21010143), (3, 7003381), (7, 3001449), (11, 1910013), (19, 1105797), (21, 1000483), (33, 636671), (57, 368599), (77, 272859), (133, 157971), (209, 100527), (231, 90953), (399, 52657), (627, 33509), (1463, 14361), (4389, 4787)]