19784704

素因数分解:

$2^{10}\times {\mathrm{139}}^2$

素因数の和:298

約数の個数: 33

約数和(自身を含む): 39836667

約数和(自身を除く): 20051963

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 139, 256, 278, 512, 556, 1024, 1112, 2224, 4448, 8896, 17792, 19321, 35584, 38642, 71168, 77284, 142336, 154568, 309136, 618272, 1236544, 2473088, 4946176, 9892352, 19784704]

約数ペア:

[(1, 19784704), (2, 9892352), (4, 4946176), (8, 2473088), (16, 1236544), (32, 618272), (64, 309136), (128, 154568), (139, 142336), (256, 77284), (278, 71168), (512, 38642), (556, 35584), (1024, 19321), (1112, 17792), (2224, 8896)]