20830700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{653}}^1$

素因数の和:707

約数の個数: 72

約数和(自身を含む): 51090480

約数和(自身を除く): 30259780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 29, 44, 50, 55, 58, 100, 110, 116, 145, 220, 275, 290, 319, 550, 580, 638, 653, 725, 1100, 1276, 1306, 1450, 1595, 2612, 2900, 3190, 3265, 6380, 6530, 7183, 7975, 13060, 14366, 15950, 16325, 18937, 28732, 31900, 32650, 35915, 37874, 65300, 71830, 75748, 94685, 143660, 179575, 189370, 208307, 359150, 378740, 416614, 473425, 718300, 833228, 946850, 1041535, 1893700, 2083070, 4166140, 5207675, 10415350, 20830700]

約数ペア:

[(1, 20830700), (2, 10415350), (4, 5207675), (5, 4166140), (10, 2083070), (11, 1893700), (20, 1041535), (22, 946850), (25, 833228), (29, 718300), (44, 473425), (50, 416614), (55, 378740), (58, 359150), (100, 208307), (110, 189370), (116, 179575), (145, 143660), (220, 94685), (275, 75748), (290, 71830), (319, 65300), (550, 37874), (580, 35915), (638, 32650), (653, 31900), (725, 28732), (1100, 18937), (1276, 16325), (1306, 15950), (1450, 14366), (1595, 13060), (2612, 7975), (2900, 7183), (3190, 6530), (3265, 6380)]