21306745

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{1277}}^1$

素因数の和:1400

約数の個数: 16

約数和(自身を含む): 26500608

約数和(自身を除く): 5193863

約数列:

[1, 5, 47, 71, 235, 355, 1277, 3337, 6385, 16685, 60019, 90667, 300095, 453335, 4261349, 21306745]

約数ペア:

[(1, 21306745), (5, 4261349), (47, 453335), (71, 300095), (235, 90667), (355, 60019), (1277, 16685), (3337, 6385)]