161990816

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{389401}}^1$

素因数の和:389424

約数の個数: 24

約数和(自身を含む): 343452564

約数和(自身を除く): 181461748

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 389401, 778802, 1557604, 3115208, 5062213, 6230416, 10124426, 12460832, 20248852, 40497704, 80995408, 161990816]

約数ペア:

[(1, 161990816), (2, 80995408), (4, 40497704), (8, 20248852), (13, 12460832), (16, 10124426), (26, 6230416), (32, 5062213), (52, 3115208), (104, 1557604), (208, 778802), (416, 389401)]