19801474

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1811}}^1$

素因数の和:1902

約数の個数: 32

約数和(自身を含む): 37573632

約数和(自身を除く): 17772158

約数列:

[1, 2, 7, 11, 14, 22, 71, 77, 142, 154, 497, 781, 994, 1562, 1811, 3622, 5467, 10934, 12677, 19921, 25354, 39842, 128581, 139447, 257162, 278894, 900067, 1414391, 1800134, 2828782, 9900737, 19801474]

約数ペア:

[(1, 19801474), (2, 9900737), (7, 2828782), (11, 1800134), (14, 1414391), (22, 900067), (71, 278894), (77, 257162), (142, 139447), (154, 128581), (497, 39842), (781, 25354), (994, 19921), (1562, 12677), (1811, 10934), (3622, 5467)]