21226288

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{25031}}^1$

素因数の和:25092

約数の個数: 20

約数和(自身を含む): 41903568

約数和(自身を除く): 20677280

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 25031, 50062, 100124, 200248, 400496, 1326643, 2653286, 5306572, 10613144, 21226288]

約数ペア:

[(1, 21226288), (2, 10613144), (4, 5306572), (8, 2653286), (16, 1326643), (53, 400496), (106, 200248), (212, 100124), (424, 50062), (848, 25031)]