81662080

素因数分解:

$2^7\times 5^1\times {\mathrm{127597}}^1$

素因数の和:127616

約数の個数: 32

約数和(自身を含む): 195224940

約数和(自身を除く): 113562860

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 127597, 255194, 510388, 637985, 1020776, 1275970, 2041552, 2551940, 4083104, 5103880, 8166208, 10207760, 16332416, 20415520, 40831040, 81662080]

約数ペア:

[(1, 81662080), (2, 40831040), (4, 20415520), (5, 16332416), (8, 10207760), (10, 8166208), (16, 5103880), (20, 4083104), (32, 2551940), (40, 2041552), (64, 1275970), (80, 1020776), (128, 637985), (160, 510388), (320, 255194), (640, 127597)]