20685700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1019}}^1$

素因数の和:1069

約数の個数: 72

約数和(自身を含む): 53121600

約数和(自身を除く): 32435900

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 29, 35, 50, 58, 70, 100, 116, 140, 145, 175, 203, 290, 350, 406, 580, 700, 725, 812, 1015, 1019, 1450, 2030, 2038, 2900, 4060, 4076, 5075, 5095, 7133, 10150, 10190, 14266, 20300, 20380, 25475, 28532, 29551, 35665, 50950, 59102, 71330, 101900, 118204, 142660, 147755, 178325, 206857, 295510, 356650, 413714, 591020, 713300, 738775, 827428, 1034285, 1477550, 2068570, 2955100, 4137140, 5171425, 10342850, 20685700]

約数ペア:

[(1, 20685700), (2, 10342850), (4, 5171425), (5, 4137140), (7, 2955100), (10, 2068570), (14, 1477550), (20, 1034285), (25, 827428), (28, 738775), (29, 713300), (35, 591020), (50, 413714), (58, 356650), (70, 295510), (100, 206857), (116, 178325), (140, 147755), (145, 142660), (175, 118204), (203, 101900), (290, 71330), (350, 59102), (406, 50950), (580, 35665), (700, 29551), (725, 28532), (812, 25475), (1015, 20380), (1019, 20300), (1450, 14266), (2030, 10190), (2038, 10150), (2900, 7133), (4060, 5095), (4076, 5075)]