18394964

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{487}}^1$

素因数の和:588

約数の個数: 48

約数和(自身を含む): 39352320

約数和(自身を除く): 20957356

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 71, 76, 133, 142, 266, 284, 487, 497, 532, 974, 994, 1349, 1948, 1988, 2698, 3409, 5396, 6818, 9253, 9443, 13636, 18506, 18886, 34577, 37012, 37772, 64771, 69154, 129542, 138308, 242039, 259084, 484078, 656963, 968156, 1313926, 2627852, 4598741, 9197482, 18394964]

約数ペア:

[(1, 18394964), (2, 9197482), (4, 4598741), (7, 2627852), (14, 1313926), (19, 968156), (28, 656963), (38, 484078), (71, 259084), (76, 242039), (133, 138308), (142, 129542), (266, 69154), (284, 64771), (487, 37772), (497, 37012), (532, 34577), (974, 18886), (994, 18506), (1349, 13636), (1948, 9443), (1988, 9253), (2698, 6818), (3409, 5396)]