21003388

素因数分解:

$2^2\times 7^1\times {\mathrm{750121}}^1$

素因数の和:750132

約数の個数: 12

約数和(自身を含む): 42006832

約数和(自身を除く): 21003444

約数列:

[1, 2, 4, 7, 14, 28, 750121, 1500242, 3000484, 5250847, 10501694, 21003388]

約数ペア:

[(1, 21003388), (2, 10501694), (4, 5250847), (7, 3000484), (14, 1500242), (28, 750121)]