28218309

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{1579}}^1$

素因数の和:1649

約数の個数: 32

約数和(自身を含む): 46110720

約数和(自身を除く): 17892411

約数列:

[1, 3, 7, 21, 23, 37, 69, 111, 161, 259, 483, 777, 851, 1579, 2553, 4737, 5957, 11053, 17871, 33159, 36317, 58423, 108951, 175269, 254219, 408961, 762657, 1226883, 1343729, 4031187, 9406103, 28218309]

約数ペア:

[(1, 28218309), (3, 9406103), (7, 4031187), (21, 1343729), (23, 1226883), (37, 762657), (69, 408961), (111, 254219), (161, 175269), (259, 108951), (483, 58423), (777, 36317), (851, 33159), (1579, 17871), (2553, 11053), (4737, 5957)]