20419120

素因数分解:

$2^4\times 5^1\times {\mathrm{255239}}^1$

素因数の和:255252

約数の個数: 20

約数和(自身を含む): 47474640

約数和(自身を除く): 27055520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 255239, 510478, 1020956, 1276195, 2041912, 2552390, 4083824, 5104780, 10209560, 20419120]

約数ペア:

[(1, 20419120), (2, 10209560), (4, 5104780), (5, 4083824), (8, 2552390), (10, 2041912), (16, 1276195), (20, 1020956), (40, 510478), (80, 255239)]