16784080

素因数分解:

$2^4\times 5^1\times {\mathrm{209801}}^1$

素因数の和:209814

約数の個数: 20

約数和(自身を含む): 39023172

約数和(自身を除く): 22239092

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 209801, 419602, 839204, 1049005, 1678408, 2098010, 3356816, 4196020, 8392040, 16784080]

約数ペア:

[(1, 16784080), (2, 8392040), (4, 4196020), (5, 3356816), (8, 2098010), (10, 1678408), (16, 1049005), (20, 839204), (40, 419602), (80, 209801)]