20731676

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{257}}^1$

素因数の和:378

約数の個数: 48

約数和(自身を含む): 43228416

約数和(自身を除く): 22496740

約数列:

[1, 2, 4, 7, 14, 28, 43, 67, 86, 134, 172, 257, 268, 301, 469, 514, 602, 938, 1028, 1204, 1799, 1876, 2881, 3598, 5762, 7196, 11051, 11524, 17219, 20167, 22102, 34438, 40334, 44204, 68876, 77357, 80668, 120533, 154714, 241066, 309428, 482132, 740417, 1480834, 2961668, 5182919, 10365838, 20731676]

約数ペア:

[(1, 20731676), (2, 10365838), (4, 5182919), (7, 2961668), (14, 1480834), (28, 740417), (43, 482132), (67, 309428), (86, 241066), (134, 154714), (172, 120533), (257, 80668), (268, 77357), (301, 68876), (469, 44204), (514, 40334), (602, 34438), (938, 22102), (1028, 20167), (1204, 17219), (1799, 11524), (1876, 11051), (2881, 7196), (3598, 5762)]