18768981

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2621}}^1$

素因数の和:2673

約数の個数: 32

約数和(自身を含む): 32219136

約数和(自身を除く): 13450155

約数列:

[1, 3, 7, 11, 21, 31, 33, 77, 93, 217, 231, 341, 651, 1023, 2387, 2621, 7161, 7863, 18347, 28831, 55041, 81251, 86493, 201817, 243753, 568757, 605451, 893761, 1706271, 2681283, 6256327, 18768981]

約数ペア:

[(1, 18768981), (3, 6256327), (7, 2681283), (11, 1706271), (21, 893761), (31, 605451), (33, 568757), (77, 243753), (93, 201817), (217, 86493), (231, 81251), (341, 55041), (651, 28831), (1023, 18347), (2387, 7863), (2621, 7161)]