19565521880

素因数分解:

$2^3\times 5^1\times {\mathrm{489138047}}^1$

素因数の和:489138058

約数の個数: 16

約数和(自身を含む): 44022424320

約数和(自身を除く): 24456902440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 489138047, 978276094, 1956552188, 2445690235, 3913104376, 4891380470, 9782760940, 19565521880]

約数ペア:

[(1, 19565521880), (2, 9782760940), (4, 4891380470), (5, 3913104376), (8, 2445690235), (10, 1956552188), (20, 978276094), (40, 489138047)]