20645900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{137}}^2$

素因数の和:299

約数の個数: 54

約数和(自身を含む): 49233828

約数和(自身を除く): 28587928

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 137, 220, 274, 275, 548, 550, 685, 1100, 1370, 1507, 2740, 3014, 3425, 6028, 6850, 7535, 13700, 15070, 18769, 30140, 37538, 37675, 75076, 75350, 93845, 150700, 187690, 206459, 375380, 412918, 469225, 825836, 938450, 1032295, 1876900, 2064590, 4129180, 5161475, 10322950, 20645900]

約数ペア:

[(1, 20645900), (2, 10322950), (4, 5161475), (5, 4129180), (10, 2064590), (11, 1876900), (20, 1032295), (22, 938450), (25, 825836), (44, 469225), (50, 412918), (55, 375380), (100, 206459), (110, 187690), (137, 150700), (220, 93845), (274, 75350), (275, 75076), (548, 37675), (550, 37538), (685, 30140), (1100, 18769), (1370, 15070), (1507, 13700), (2740, 7535), (3014, 6850), (3425, 6028)]