21204571318

素因数分解:

$2^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{7929907}}^1$

素因数の和:7930107

約数の個数: 16

約数和(自身を含む): 36541016064

約数和(自身を除く): 15336444746

約数列:

[1, 2, 7, 14, 191, 382, 1337, 2674, 7929907, 15859814, 55509349, 111018698, 1514612237, 3029224474, 10602285659, 21204571318]

約数ペア:

[(1, 21204571318), (2, 10602285659), (7, 3029224474), (14, 1514612237), (191, 111018698), (382, 55509349), (1337, 15859814), (2674, 7929907)]