21726219

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1\times {\mathrm{937}}^1$

素因数の和:1130

約数の個数: 16

約数和(自身を含む): 29715840

約数和(自身を除く): 7989621

約数列:

[1, 3, 59, 131, 177, 393, 937, 2811, 7729, 23187, 55283, 122747, 165849, 368241, 7242073, 21726219]

約数ペア:

[(1, 21726219), (3, 7242073), (59, 368241), (131, 165849), (177, 122747), (393, 55283), (937, 23187), (2811, 7729)]