20218121

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{3919}}^1$

素因数の和:4004

約数の個数: 16

約数和(自身を含む): 25589760

約数和(自身を除く): 5371639

約数列:

[1, 7, 11, 67, 77, 469, 737, 3919, 5159, 27433, 43109, 262573, 301763, 1838011, 2888303, 20218121]

約数ペア:

[(1, 20218121), (7, 2888303), (11, 1838011), (67, 301763), (77, 262573), (469, 43109), (737, 27433), (3919, 5159)]