20753117

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{277}}^1$

素因数の和:441

約数の個数: 24

約数和(自身を含む): 26621280

約数和(自身を除く): 5868163

約数列:

[1, 7, 11, 49, 77, 139, 277, 539, 973, 1529, 1939, 3047, 6811, 10703, 13573, 21329, 38503, 74921, 149303, 269521, 423533, 1886647, 2964731, 20753117]

約数ペア:

[(1, 20753117), (7, 2964731), (11, 1886647), (49, 423533), (77, 269521), (139, 149303), (277, 74921), (539, 38503), (973, 21329), (1529, 13573), (1939, 10703), (3047, 6811)]