8781841280

素因数分解:

$2^7\times 5^1\times {\mathrm{13721627}}^1$

素因数の和:13721646

約数の個数: 32

約数和(自身を含む): 20994090840

約数和(自身を除く): 12212249560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 13721627, 27443254, 54886508, 68608135, 109773016, 137216270, 219546032, 274432540, 439092064, 548865080, 878184128, 1097730160, 1756368256, 2195460320, 4390920640, 8781841280]

約数ペア:

[(1, 8781841280), (2, 4390920640), (4, 2195460320), (5, 1756368256), (8, 1097730160), (10, 878184128), (16, 548865080), (20, 439092064), (32, 274432540), (40, 219546032), (64, 137216270), (80, 109773016), (128, 68608135), (160, 54886508), (320, 27443254), (640, 13721627)]