1644656

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{7907}}^1$

素因数の和:7928

約数の個数: 20

約数和(自身を含む): 3432072

約数和(自身を除く): 1787416

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 7907, 15814, 31628, 63256, 102791, 126512, 205582, 411164, 822328, 1644656]

約数ペア:

[(1, 1644656), (2, 822328), (4, 411164), (8, 205582), (13, 126512), (16, 102791), (26, 63256), (52, 31628), (104, 15814), (208, 7907)]