19720708

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{1951}}^1$

素因数の和:2000

約数の個数: 36

約数和(自身を含む): 41647872

約数和(自身を除く): 21927164

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 361, 532, 722, 1444, 1951, 2527, 3902, 5054, 7804, 10108, 13657, 27314, 37069, 54628, 74138, 148276, 259483, 518966, 704311, 1037932, 1408622, 2817244, 4930177, 9860354, 19720708]

約数ペア:

[(1, 19720708), (2, 9860354), (4, 4930177), (7, 2817244), (14, 1408622), (19, 1037932), (28, 704311), (38, 518966), (76, 259483), (133, 148276), (266, 74138), (361, 54628), (532, 37069), (722, 27314), (1444, 13657), (1951, 10108), (2527, 7804), (3902, 5054)]