209519181

素因数分解:

$3^2\times {\mathrm{149}}^1\times {\mathrm{156241}}^1$

素因数の和:156396

約数の個数: 12

約数和(自身を含む): 304671900

約数和(自身を除く): 95152719

約数列:

[1, 3, 9, 149, 447, 1341, 156241, 468723, 1406169, 23279909, 69839727, 209519181]

約数ペア:

[(1, 209519181), (3, 69839727), (9, 23279909), (149, 1406169), (447, 468723), (1341, 156241)]