20112500

素因数分解:

$2^2\times 5^5\times {\mathrm{1609}}^1$

素因数の和:1638

約数の個数: 36

約数和(自身を含む): 44020620

約数和(自身を除く): 23908120

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 1609, 2500, 3125, 3218, 6250, 6436, 8045, 12500, 16090, 32180, 40225, 80450, 160900, 201125, 402250, 804500, 1005625, 2011250, 4022500, 5028125, 10056250, 20112500]

約数ペア:

[(1, 20112500), (2, 10056250), (4, 5028125), (5, 4022500), (10, 2011250), (20, 1005625), (25, 804500), (50, 402250), (100, 201125), (125, 160900), (250, 80450), (500, 40225), (625, 32180), (1250, 16090), (1609, 12500), (2500, 8045), (3125, 6436), (3218, 6250)]