640410080

素因数分解:

$2^5\times 5^1\times {\mathrm{4002563}}^1$

素因数の和:4002578

約数の個数: 24

約数和(自身を含む): 1512969192

約数和(自身を除く): 872559112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 4002563, 8005126, 16010252, 20012815, 32020504, 40025630, 64041008, 80051260, 128082016, 160102520, 320205040, 640410080]

約数ペア:

[(1, 640410080), (2, 320205040), (4, 160102520), (5, 128082016), (8, 80051260), (10, 64041008), (16, 40025630), (20, 32020504), (32, 20012815), (40, 16010252), (80, 8005126), (160, 4002563)]