388528640

素因数分解:

$2^9\times 5^1\times {\mathrm{151769}}^1$

素因数の和:151792

約数の個数: 40

約数和(自身を含む): 931564260

約数和(自身を除く): 543035620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 151769, 303538, 607076, 758845, 1214152, 1517690, 2428304, 3035380, 4856608, 6070760, 9713216, 12141520, 19426432, 24283040, 38852864, 48566080, 77705728, 97132160, 194264320, 388528640]

約数ペア:

[(1, 388528640), (2, 194264320), (4, 97132160), (5, 77705728), (8, 48566080), (10, 38852864), (16, 24283040), (20, 19426432), (32, 12141520), (40, 9713216), (64, 6070760), (80, 4856608), (128, 3035380), (160, 2428304), (256, 1517690), (320, 1214152), (512, 758845), (640, 607076), (1280, 303538), (2560, 151769)]