128011640

素因数分解:

$2^3\times 5^1\times {\mathrm{3200291}}^1$

素因数の和:3200302

約数の個数: 16

約数和(自身を含む): 288026280

約数和(自身を除く): 160014640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3200291, 6400582, 12801164, 16001455, 25602328, 32002910, 64005820, 128011640]

約数ペア:

[(1, 128011640), (2, 64005820), (4, 32002910), (5, 25602328), (8, 16001455), (10, 12801164), (20, 6400582), (40, 3200291)]