21653828

素因数分解:

$2^2\times 7^1\times {\mathrm{193}}^1\times {\mathrm{4007}}^1$

素因数の和:4211

約数の個数: 24

約数和(自身を含む): 43542912

約数和(自身を除く): 21889084

約数列:

[1, 2, 4, 7, 14, 28, 193, 386, 772, 1351, 2702, 4007, 5404, 8014, 16028, 28049, 56098, 112196, 773351, 1546702, 3093404, 5413457, 10826914, 21653828]

約数ペア:

[(1, 21653828), (2, 10826914), (4, 5413457), (7, 3093404), (14, 1546702), (28, 773351), (193, 112196), (386, 56098), (772, 28049), (1351, 16028), (2702, 8014), (4007, 5404)]