2500900

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:384

約数の個数: 36

約数和(自身を含む): 5507460

約数和(自身を除く): 3006560

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 178, 281, 356, 445, 562, 890, 1124, 1405, 1780, 2225, 2810, 4450, 5620, 7025, 8900, 14050, 25009, 28100, 50018, 100036, 125045, 250090, 500180, 625225, 1250450, 2500900]

約数ペア:

[(1, 2500900), (2, 1250450), (4, 625225), (5, 500180), (10, 250090), (20, 125045), (25, 100036), (50, 50018), (89, 28100), (100, 25009), (178, 14050), (281, 8900), (356, 7025), (445, 5620), (562, 4450), (890, 2810), (1124, 2225), (1405, 1780)]