78798020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{2003}}^1$

素因数の和:2300

約数の個数: 48

約数和(自身を含む): 189883008

約数和(自身を除く): 111084988

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 281, 562, 1124, 1405, 1967, 2003, 2810, 3934, 4006, 5620, 7868, 8012, 9835, 10015, 14021, 19670, 20030, 28042, 39340, 40060, 56084, 70105, 140210, 280420, 562843, 1125686, 2251372, 2814215, 3939901, 5628430, 7879802, 11256860, 15759604, 19699505, 39399010, 78798020]

約数ペア:

[(1, 78798020), (2, 39399010), (4, 19699505), (5, 15759604), (7, 11256860), (10, 7879802), (14, 5628430), (20, 3939901), (28, 2814215), (35, 2251372), (70, 1125686), (140, 562843), (281, 280420), (562, 140210), (1124, 70105), (1405, 56084), (1967, 40060), (2003, 39340), (2810, 28042), (3934, 20030), (4006, 19670), (5620, 14021), (7868, 10015), (8012, 9835)]