21407500

素因数分解:

$2^2\times 5^4\times {\mathrm{8563}}^1$

素因数の和:8587

約数の個数: 30

約数和(自身を含む): 46819388

約数和(自身を除く): 25411888

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 8563, 17126, 34252, 42815, 85630, 171260, 214075, 428150, 856300, 1070375, 2140750, 4281500, 5351875, 10703750, 21407500]

約数ペア:

[(1, 21407500), (2, 10703750), (4, 5351875), (5, 4281500), (10, 2140750), (20, 1070375), (25, 856300), (50, 428150), (100, 214075), (125, 171260), (250, 85630), (500, 42815), (625, 34252), (1250, 17126), (2500, 8563)]