128959180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{131591}}^1$

素因数の和:131614

約数の個数: 36

約数和(自身を含む): 315031248

約数和(自身を除く): 186072068

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 131591, 263182, 526364, 657955, 921137, 1315910, 1842274, 2631820, 3684548, 4605685, 6447959, 9211370, 12895918, 18422740, 25791836, 32239795, 64479590, 128959180]

約数ペア:

[(1, 128959180), (2, 64479590), (4, 32239795), (5, 25791836), (7, 18422740), (10, 12895918), (14, 9211370), (20, 6447959), (28, 4605685), (35, 3684548), (49, 2631820), (70, 1842274), (98, 1315910), (140, 921137), (196, 657955), (245, 526364), (490, 263182), (980, 131591)]