19659016

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{449}}^1$

素因数の和:889

約数の個数: 32

約数和(自身を含む): 39879000

約数和(自身を除く): 20219984

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 421, 449, 842, 898, 1684, 1796, 3368, 3592, 5473, 5837, 10946, 11674, 21892, 23348, 43784, 46696, 189029, 378058, 756116, 1512232, 2457377, 4914754, 9829508, 19659016]

約数ペア:

[(1, 19659016), (2, 9829508), (4, 4914754), (8, 2457377), (13, 1512232), (26, 756116), (52, 378058), (104, 189029), (421, 46696), (449, 43784), (842, 23348), (898, 21892), (1684, 11674), (1796, 10946), (3368, 5837), (3592, 5473)]