18989421

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{197}}^1$

素因数の和:361

約数の個数: 32

約数和(自身を含む): 29196288

約数和(自身を除く): 10206867

約数列:

[1, 3, 11, 23, 33, 69, 127, 197, 253, 381, 591, 759, 1397, 2167, 2921, 4191, 4531, 6501, 8763, 13593, 25019, 32131, 49841, 75057, 96393, 149523, 275209, 575437, 825627, 1726311, 6329807, 18989421]

約数ペア:

[(1, 18989421), (3, 6329807), (11, 1726311), (23, 825627), (33, 575437), (69, 275209), (127, 149523), (197, 96393), (253, 75057), (381, 49841), (591, 32131), (759, 25019), (1397, 13593), (2167, 8763), (2921, 6501), (4191, 4531)]