20500120

素因数分解:

$2^3\times 5^1\times {\mathrm{512503}}^1$

素因数の和:512514

約数の個数: 16

約数和(自身を含む): 46125360

約数和(自身を除く): 25625240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 512503, 1025006, 2050012, 2562515, 4100024, 5125030, 10250060, 20500120]

約数ペア:

[(1, 20500120), (2, 10250060), (4, 5125030), (5, 4100024), (8, 2562515), (10, 2050012), (20, 1025006), (40, 512503)]