19966592

素因数分解:

$2^7\times {\mathrm{389}}^1\times {\mathrm{401}}^1$

素因数の和:804

約数の個数: 32

約数和(自身を含む): 39978900

約数和(自身を除く): 20012308

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 389, 401, 778, 802, 1556, 1604, 3112, 3208, 6224, 6416, 12448, 12832, 24896, 25664, 49792, 51328, 155989, 311978, 623956, 1247912, 2495824, 4991648, 9983296, 19966592]

約数ペア:

[(1, 19966592), (2, 9983296), (4, 4991648), (8, 2495824), (16, 1247912), (32, 623956), (64, 311978), (128, 155989), (389, 51328), (401, 49792), (778, 25664), (802, 24896), (1556, 12832), (1604, 12448), (3112, 6416), (3208, 6224)]