127168640

素因数分解:

$2^7\times 5^1\times {\mathrm{198701}}^1$

素因数の和:198720

約数の個数: 32

約数和(自身を含む): 304014060

約数和(自身を除く): 176845420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 198701, 397402, 794804, 993505, 1589608, 1987010, 3179216, 3974020, 6358432, 7948040, 12716864, 15896080, 25433728, 31792160, 63584320, 127168640]

約数ペア:

[(1, 127168640), (2, 63584320), (4, 31792160), (5, 25433728), (8, 15896080), (10, 12716864), (16, 7948040), (20, 6358432), (32, 3974020), (40, 3179216), (64, 1987010), (80, 1589608), (128, 993505), (160, 794804), (320, 397402), (640, 198701)]