20438319

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{881}}^1$

素因数の和:951

約数の個数: 32

約数和(自身を含む): 32175360

約数和(自身を除く): 11737041

約数列:

[1, 3, 11, 19, 33, 37, 57, 111, 209, 407, 627, 703, 881, 1221, 2109, 2643, 7733, 9691, 16739, 23199, 29073, 32597, 50217, 97791, 184129, 358567, 552387, 619343, 1075701, 1858029, 6812773, 20438319]

約数ペア:

[(1, 20438319), (3, 6812773), (11, 1858029), (19, 1075701), (33, 619343), (37, 552387), (57, 358567), (111, 184129), (209, 97791), (407, 50217), (627, 32597), (703, 29073), (881, 23199), (1221, 16739), (2109, 9691), (2643, 7733)]