129621080

素因数分解:

$2^3\times 5^1\times {\mathrm{3240527}}^1$

素因数の和:3240538

約数の個数: 16

約数和(自身を含む): 291647520

約数和(自身を除く): 162026440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3240527, 6481054, 12962108, 16202635, 25924216, 32405270, 64810540, 129621080]

約数ペア:

[(1, 129621080), (2, 64810540), (4, 32405270), (5, 25924216), (8, 16202635), (10, 12962108), (20, 6481054), (40, 3240527)]