20156213

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{3907}}^1$

素因数の和:3992

約数の個数: 16

約数和(自身を含む): 25511424

約数和(自身を除く): 5355211

約数列:

[1, 7, 11, 67, 77, 469, 737, 3907, 5159, 27349, 42977, 261769, 300839, 1832383, 2879459, 20156213]

約数ペア:

[(1, 20156213), (7, 2879459), (11, 1832383), (67, 300839), (77, 261769), (469, 42977), (737, 27349), (3907, 5159)]