20707904

素因数分解:

$2^6\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2719}}^1$

素因数の和:2755

約数の個数: 56

約数和(自身を含む): 49743360

約数和(自身を除く): 29035456

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 64, 68, 112, 119, 136, 224, 238, 272, 448, 476, 544, 952, 1088, 1904, 2719, 3808, 5438, 7616, 10876, 19033, 21752, 38066, 43504, 46223, 76132, 87008, 92446, 152264, 174016, 184892, 304528, 323561, 369784, 609056, 647122, 739568, 1218112, 1294244, 1479136, 2588488, 2958272, 5176976, 10353952, 20707904]

約数ペア:

[(1, 20707904), (2, 10353952), (4, 5176976), (7, 2958272), (8, 2588488), (14, 1479136), (16, 1294244), (17, 1218112), (28, 739568), (32, 647122), (34, 609056), (56, 369784), (64, 323561), (68, 304528), (112, 184892), (119, 174016), (136, 152264), (224, 92446), (238, 87008), (272, 76132), (448, 46223), (476, 43504), (544, 38066), (952, 21752), (1088, 19033), (1904, 10876), (2719, 7616), (3808, 5438)]