1288640

素因数分解:

$2^6\times 5^1\times {\mathrm{4027}}^1$

素因数の和:4044

約数の個数: 28

約数和(自身を含む): 3069336

約数和(自身を除く): 1780696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 4027, 8054, 16108, 20135, 32216, 40270, 64432, 80540, 128864, 161080, 257728, 322160, 644320, 1288640]

約数ペア:

[(1, 1288640), (2, 644320), (4, 322160), (5, 257728), (8, 161080), (10, 128864), (16, 80540), (20, 64432), (32, 40270), (40, 32216), (64, 20135), (80, 16108), (160, 8054), (320, 4027)]