21402410

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{52201}}^1$

素因数の和:52249

約数の個数: 16

約数和(自身を含む): 39464712

約数和(自身を除く): 18062302

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 52201, 104402, 261005, 522010, 2140241, 4280482, 10701205, 21402410]

約数ペア:

[(1, 21402410), (2, 10701205), (5, 4280482), (10, 2140241), (41, 522010), (82, 261005), (205, 104402), (410, 52201)]