21129110

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{72859}}^1$

素因数の和:72895

約数の個数: 16

約数和(自身を含む): 39344400

約数和(自身を除く): 18215290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 72859, 145718, 364295, 728590, 2112911, 4225822, 10564555, 21129110]

約数ペア:

[(1, 21129110), (2, 10564555), (5, 4225822), (10, 2112911), (29, 728590), (58, 364295), (145, 145718), (290, 72859)]