20425720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72949}}^1$

素因数の和:72967

約数の個数: 32

約数和(自身を含む): 52524000

約数和(自身を除く): 32098280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72949, 145898, 291796, 364745, 510643, 583592, 729490, 1021286, 1458980, 2042572, 2553215, 2917960, 4085144, 5106430, 10212860, 20425720]

約数ペア:

[(1, 20425720), (2, 10212860), (4, 5106430), (5, 4085144), (7, 2917960), (8, 2553215), (10, 2042572), (14, 1458980), (20, 1021286), (28, 729490), (35, 583592), (40, 510643), (56, 364745), (70, 291796), (140, 145898), (280, 72949)]