21888580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{156347}}^1$

素因数の和:156363

約数の個数: 24

約数和(自身を含む): 52532928

約数和(自身を除く): 30644348

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 156347, 312694, 625388, 781735, 1094429, 1563470, 2188858, 3126940, 4377716, 5472145, 10944290, 21888580]

約数ペア:

[(1, 21888580), (2, 10944290), (4, 5472145), (5, 4377716), (7, 3126940), (10, 2188858), (14, 1563470), (20, 1094429), (28, 781735), (35, 625388), (70, 312694), (140, 156347)]