19984293

素因数分解:

$3^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2459}}^1$

素因数の和:2518

約数の個数: 32

約数和(自身を含む): 34636800

約数和(自身を除く): 14652507

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 129, 189, 301, 387, 903, 1161, 2459, 2709, 7377, 8127, 17213, 22131, 51639, 66393, 105737, 154917, 317211, 464751, 740159, 951633, 2220477, 2854899, 6661431, 19984293]

約数ペア:

[(1, 19984293), (3, 6661431), (7, 2854899), (9, 2220477), (21, 951633), (27, 740159), (43, 464751), (63, 317211), (129, 154917), (189, 105737), (301, 66393), (387, 51639), (903, 22131), (1161, 17213), (2459, 8127), (2709, 7377)]