21160205

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{20249}}^1$

素因数の和:20284

約数の個数: 16

約数和(自身を含む): 29160000

約数和(自身を除く): 7999795

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 20249, 101245, 222739, 384731, 1113695, 1923655, 4232041, 21160205]

約数ペア:

[(1, 21160205), (5, 4232041), (11, 1923655), (19, 1113695), (55, 384731), (95, 222739), (209, 101245), (1045, 20249)]