781440080

素因数分解:

$2^4\times 5^1\times {\mathrm{9768001}}^1$

素因数の和:9768014

約数の個数: 20

約数和(自身を含む): 1816848372

約数和(自身を除く): 1035408292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 9768001, 19536002, 39072004, 48840005, 78144008, 97680010, 156288016, 195360020, 390720040, 781440080]

約数ペア:

[(1, 781440080), (2, 390720040), (4, 195360020), (5, 156288016), (8, 97680010), (10, 78144008), (16, 48840005), (20, 39072004), (40, 19536002), (80, 9768001)]