19564040

素因数分解:

$2^3\times 5^1\times {\mathrm{489101}}^1$

素因数の和:489112

約数の個数: 16

約数和(自身を含む): 44019180

約数和(自身を除く): 24455140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 489101, 978202, 1956404, 2445505, 3912808, 4891010, 9782020, 19564040]

約数ペア:

[(1, 19564040), (2, 9782020), (4, 4891010), (5, 3912808), (8, 2445505), (10, 1956404), (20, 978202), (40, 489101)]