21784806

素因数分解:

$2^1\times 3^2\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{281}}^1$

素因数の和:421

約数の個数: 48

約数和(自身を含む): 48831120

約数和(自身を除く): 27046314

約数列:

[1, 2, 3, 6, 9, 18, 59, 73, 118, 146, 177, 219, 281, 354, 438, 531, 562, 657, 843, 1062, 1314, 1686, 2529, 4307, 5058, 8614, 12921, 16579, 20513, 25842, 33158, 38763, 41026, 49737, 61539, 77526, 99474, 123078, 149211, 184617, 298422, 369234, 1210267, 2420534, 3630801, 7261602, 10892403, 21784806]

約数ペア:

[(1, 21784806), (2, 10892403), (3, 7261602), (6, 3630801), (9, 2420534), (18, 1210267), (59, 369234), (73, 298422), (118, 184617), (146, 149211), (177, 123078), (219, 99474), (281, 77526), (354, 61539), (438, 49737), (531, 41026), (562, 38763), (657, 33158), (843, 25842), (1062, 20513), (1314, 16579), (1686, 12921), (2529, 8614), (4307, 5058)]