64140040

素因数分解:

$2^3\times 5^1\times {\mathrm{1603501}}^1$

素因数の和:1603512

約数の個数: 16

約数和(自身を含む): 144315180

約数和(自身を除く): 80175140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1603501, 3207002, 6414004, 8017505, 12828008, 16035010, 32070020, 64140040]

約数ペア:

[(1, 64140040), (2, 32070020), (4, 16035010), (5, 12828008), (8, 8017505), (10, 6414004), (20, 3207002), (40, 1603501)]