21220024

素因数分解:

$2^3\times 7^1\times {\mathrm{378929}}^1$

素因数の和:378942

約数の個数: 16

約数和(自身を含む): 45471600

約数和(自身を除く): 24251576

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 378929, 757858, 1515716, 2652503, 3031432, 5305006, 10610012, 21220024]

約数ペア:

[(1, 21220024), (2, 10610012), (4, 5305006), (7, 3031432), (8, 2652503), (14, 1515716), (28, 757858), (56, 378929)]