21218554

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79769}}^1$

素因数の和:79797

約数の個数: 16

約数和(自身を含む): 38289600

約数和(自身を除く): 17071046

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 79769, 159538, 558383, 1116766, 1515611, 3031222, 10609277, 21218554]

約数ペア:

[(1, 21218554), (2, 10609277), (7, 3031222), (14, 1515611), (19, 1116766), (38, 558383), (133, 159538), (266, 79769)]