20919136

素因数分解:

$2^5\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1987}}^1$

素因数の和:2051

約数の個数: 48

約数和(自身を含む): 48093696

約数和(自身を除く): 27174560

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 47, 56, 94, 112, 188, 224, 329, 376, 658, 752, 1316, 1504, 1987, 2632, 3974, 5264, 7948, 10528, 13909, 15896, 27818, 31792, 55636, 63584, 93389, 111272, 186778, 222544, 373556, 445088, 653723, 747112, 1307446, 1494224, 2614892, 2988448, 5229784, 10459568, 20919136]

約数ペア:

[(1, 20919136), (2, 10459568), (4, 5229784), (7, 2988448), (8, 2614892), (14, 1494224), (16, 1307446), (28, 747112), (32, 653723), (47, 445088), (56, 373556), (94, 222544), (112, 186778), (188, 111272), (224, 93389), (329, 63584), (376, 55636), (658, 31792), (752, 27818), (1316, 15896), (1504, 13909), (1987, 10528), (2632, 7948), (3974, 5264)]