21209045

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29663}}^1$

素因数の和:29692

約数の個数: 16

約数和(自身を含む): 29901312

約数和(自身を除く): 8692267

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 29663, 148315, 326293, 385619, 1631465, 1928095, 4241809, 21209045]

約数ペア:

[(1, 21209045), (5, 4241809), (11, 1928095), (13, 1631465), (55, 385619), (65, 326293), (143, 148315), (715, 29663)]