64396040

素因数分解:

$2^3\times 5^1\times {\mathrm{1609901}}^1$

素因数の和:1609912

約数の個数: 16

約数和(自身を含む): 144891180

約数和(自身を除く): 80495140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1609901, 3219802, 6439604, 8049505, 12879208, 16099010, 32198020, 64396040]

約数ペア:

[(1, 64396040), (2, 32198020), (4, 16099010), (5, 12879208), (8, 8049505), (10, 6439604), (20, 3219802), (40, 1609901)]