320688640

素因数分解:

$2^9\times 5^1\times {\mathrm{125269}}^1$

素因数の和:125292

約数の個数: 40

約数和(自身を含む): 768907260

約数和(自身を除く): 448218620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 125269, 250538, 501076, 626345, 1002152, 1252690, 2004304, 2505380, 4008608, 5010760, 8017216, 10021520, 16034432, 20043040, 32068864, 40086080, 64137728, 80172160, 160344320, 320688640]

約数ペア:

[(1, 320688640), (2, 160344320), (4, 80172160), (5, 64137728), (8, 40086080), (10, 32068864), (16, 20043040), (20, 16034432), (32, 10021520), (40, 8017216), (64, 5010760), (80, 4008608), (128, 2505380), (160, 2004304), (256, 1252690), (320, 1002152), (512, 626345), (640, 501076), (1280, 250538), (2560, 125269)]