128941820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{921013}}^1$

素因数の和:921029

約数の個数: 24

約数和(自身を含む): 309460704

約数和(自身を除く): 180518884

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 921013, 1842026, 3684052, 4605065, 6447091, 9210130, 12894182, 18420260, 25788364, 32235455, 64470910, 128941820]

約数ペア:

[(1, 128941820), (2, 64470910), (4, 32235455), (5, 25788364), (7, 18420260), (10, 12894182), (14, 9210130), (20, 6447091), (28, 4605065), (35, 3684052), (70, 1842026), (140, 921013)]