21165095

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{19507}}^1$

素因数の和:19550

約数の個数: 16

約数和(自身を含む): 29964288

約数和(自身を除く): 8799193

約数列:

[1, 5, 7, 31, 35, 155, 217, 1085, 19507, 97535, 136549, 604717, 682745, 3023585, 4233019, 21165095]

約数ペア:

[(1, 21165095), (5, 4233019), (7, 3023585), (31, 682745), (35, 604717), (155, 136549), (217, 97535), (1085, 19507)]