20382782

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:193

約数の個数: 48

約数和(自身を含む): 38221920

約数和(自身を除く): 17839138

約数列:

[1, 2, 7, 14, 19, 37, 38, 74, 109, 133, 218, 259, 266, 361, 518, 703, 722, 763, 1406, 1526, 2071, 2527, 4033, 4142, 4921, 5054, 8066, 9842, 13357, 14497, 26714, 28231, 28994, 39349, 56462, 76627, 78698, 93499, 153254, 186998, 275443, 536389, 550886, 1072778, 1455913, 2911826, 10191391, 20382782]

約数ペア:

[(1, 20382782), (2, 10191391), (7, 2911826), (14, 1455913), (19, 1072778), (37, 550886), (38, 536389), (74, 275443), (109, 186998), (133, 153254), (218, 93499), (259, 78698), (266, 76627), (361, 56462), (518, 39349), (703, 28994), (722, 28231), (763, 26714), (1406, 14497), (1526, 13357), (2071, 9842), (2527, 8066), (4033, 5054), (4142, 4921)]