19988300

素因数分解:

$2^2\times 5^2\times {\mathrm{137}}^1\times {\mathrm{1459}}^1$

素因数の和:1610

約数の個数: 36

約数和(自身を含む): 43721160

約数和(自身を除く): 23732860

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 137, 274, 548, 685, 1370, 1459, 2740, 2918, 3425, 5836, 6850, 7295, 13700, 14590, 29180, 36475, 72950, 145900, 199883, 399766, 799532, 999415, 1998830, 3997660, 4997075, 9994150, 19988300]

約数ペア:

[(1, 19988300), (2, 9994150), (4, 4997075), (5, 3997660), (10, 1998830), (20, 999415), (25, 799532), (50, 399766), (100, 199883), (137, 145900), (274, 72950), (548, 36475), (685, 29180), (1370, 14590), (1459, 13700), (2740, 7295), (2918, 6850), (3425, 5836)]