205758420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{489901}}^1$

素因数の和:489920

約数の個数: 48

約数和(自身を含む): 658428288

約数和(自身を除く): 452669868

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 489901, 979802, 1469703, 1959604, 2449505, 2939406, 3429307, 4899010, 5878812, 6858614, 7348515, 9798020, 10287921, 13717228, 14697030, 17146535, 20575842, 29394060, 34293070, 41151684, 51439605, 68586140, 102879210, 205758420]

約数ペア:

[(1, 205758420), (2, 102879210), (3, 68586140), (4, 51439605), (5, 41151684), (6, 34293070), (7, 29394060), (10, 20575842), (12, 17146535), (14, 14697030), (15, 13717228), (20, 10287921), (21, 9798020), (28, 7348515), (30, 6858614), (35, 5878812), (42, 4899010), (60, 3429307), (70, 2939406), (84, 2449505), (105, 1959604), (140, 1469703), (210, 979802), (420, 489901)]