21057806

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{136739}}^1$

素因数の和:136759

約数の個数: 16

約数和(自身を含む): 39381120

約数和(自身を除く): 18323314

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 136739, 273478, 957173, 1504129, 1914346, 3008258, 10528903, 21057806]

約数ペア:

[(1, 21057806), (2, 10528903), (7, 3008258), (11, 1914346), (14, 1504129), (22, 957173), (77, 273478), (154, 136739)]