21340803

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{907}}^1$

素因数の和:975

約数の個数: 32

約数和(自身を含む): 33472512

約数和(自身を除く): 12131709

約数列:

[1, 3, 11, 23, 31, 33, 69, 93, 253, 341, 713, 759, 907, 1023, 2139, 2721, 7843, 9977, 20861, 23529, 28117, 29931, 62583, 84351, 229471, 309287, 646691, 688413, 927861, 1940073, 7113601, 21340803]

約数ペア:

[(1, 21340803), (3, 7113601), (11, 1940073), (23, 927861), (31, 688413), (33, 646691), (69, 309287), (93, 229471), (253, 84351), (341, 62583), (713, 29931), (759, 28117), (907, 23529), (1023, 20861), (2139, 9977), (2721, 7843)]