12688880

素因数分解:

$2^4\times 5^1\times {\mathrm{158611}}^1$

素因数の和:158624

約数の個数: 20

約数和(自身を含む): 29501832

約数和(自身を除く): 16812952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 158611, 317222, 634444, 793055, 1268888, 1586110, 2537776, 3172220, 6344440, 12688880]

約数ペア:

[(1, 12688880), (2, 6344440), (4, 3172220), (5, 2537776), (8, 1586110), (10, 1268888), (16, 793055), (20, 634444), (40, 317222), (80, 158611)]