209939716

素因数分解:

$2^2\times 7^2\times {\mathrm{1071121}}^1$

素因数の和:1071139

約数の個数: 18

約数和(自身を含む): 427377678

約数和(自身を除く): 217437962

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 1071121, 2142242, 4284484, 7497847, 14995694, 29991388, 52484929, 104969858, 209939716]

約数ペア:

[(1, 209939716), (2, 104969858), (4, 52484929), (7, 29991388), (14, 14995694), (28, 7497847), (49, 4284484), (98, 2142242), (196, 1071121)]