21042819

素因数分解:

$3^2\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1583}}^1$

素因数の和:1807

約数の個数: 24

約数和(自身を含む): 34924032

約数和(自身を除く): 13881213

約数列:

[1, 3, 7, 9, 21, 63, 211, 633, 1477, 1583, 1899, 4431, 4749, 11081, 13293, 14247, 33243, 99729, 334013, 1002039, 2338091, 3006117, 7014273, 21042819]

約数ペア:

[(1, 21042819), (3, 7014273), (7, 3006117), (9, 2338091), (21, 1002039), (63, 334013), (211, 99729), (633, 33243), (1477, 14247), (1583, 13293), (1899, 11081), (4431, 4749)]