21284984

素因数分解:

$2^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{8087}}^1$

素因数の和:8147

約数の個数: 32

約数和(自身を含む): 46586880

約数和(自身を除く): 25301896

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 56, 94, 188, 329, 376, 658, 1316, 2632, 8087, 16174, 32348, 56609, 64696, 113218, 226436, 380089, 452872, 760178, 1520356, 2660623, 3040712, 5321246, 10642492, 21284984]

約数ペア:

[(1, 21284984), (2, 10642492), (4, 5321246), (7, 3040712), (8, 2660623), (14, 1520356), (28, 760178), (47, 452872), (56, 380089), (94, 226436), (188, 113218), (329, 64696), (376, 56609), (658, 32348), (1316, 16174), (2632, 8087)]