28220973

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{797}}^1$

素因数の和:877

約数の個数: 32

約数和(自身を含む): 43666560

約数和(自身を除く): 15445587

約数列:

[1, 3, 11, 29, 33, 37, 87, 111, 319, 407, 797, 957, 1073, 1221, 2391, 3219, 8767, 11803, 23113, 26301, 29489, 35409, 69339, 88467, 254243, 324379, 762729, 855181, 973137, 2565543, 9406991, 28220973]

約数ペア:

[(1, 28220973), (3, 9406991), (11, 2565543), (29, 973137), (33, 855181), (37, 762729), (87, 324379), (111, 254243), (319, 88467), (407, 69339), (797, 35409), (957, 29489), (1073, 26301), (1221, 23113), (2391, 11803), (3219, 8767)]