19148540

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1489}}^1$

素因数の和:2141

約数の個数: 24

約数和(自身を含む): 40301520

約数和(自身を除く): 21152980

約数列:

[1, 2, 4, 5, 10, 20, 643, 1286, 1489, 2572, 2978, 3215, 5956, 6430, 7445, 12860, 14890, 29780, 957427, 1914854, 3829708, 4787135, 9574270, 19148540]

約数ペア:

[(1, 19148540), (2, 9574270), (4, 4787135), (5, 3829708), (10, 1914854), (20, 957427), (643, 29780), (1286, 14890), (1489, 12860), (2572, 7445), (2978, 6430), (3215, 5956)]