12985100

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{1459}}^1$

素因数の和:1562

約数の個数: 36

約数和(自身を含む): 28513800

約数和(自身を除く): 15528700

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 178, 356, 445, 890, 1459, 1780, 2225, 2918, 4450, 5836, 7295, 8900, 14590, 29180, 36475, 72950, 129851, 145900, 259702, 519404, 649255, 1298510, 2597020, 3246275, 6492550, 12985100]

約数ペア:

[(1, 12985100), (2, 6492550), (4, 3246275), (5, 2597020), (10, 1298510), (20, 649255), (25, 519404), (50, 259702), (89, 145900), (100, 129851), (178, 72950), (356, 36475), (445, 29180), (890, 14590), (1459, 8900), (1780, 7295), (2225, 5836), (2918, 4450)]