28322420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{2003}}^1$

素因数の和:2120

約数の個数: 48

約数和(自身を含む): 68681088

約数和(自身を除く): 40358668

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 101, 140, 202, 404, 505, 707, 1010, 1414, 2003, 2020, 2828, 3535, 4006, 7070, 8012, 10015, 14021, 14140, 20030, 28042, 40060, 56084, 70105, 140210, 202303, 280420, 404606, 809212, 1011515, 1416121, 2023030, 2832242, 4046060, 5664484, 7080605, 14161210, 28322420]

約数ペア:

[(1, 28322420), (2, 14161210), (4, 7080605), (5, 5664484), (7, 4046060), (10, 2832242), (14, 2023030), (20, 1416121), (28, 1011515), (35, 809212), (70, 404606), (101, 280420), (140, 202303), (202, 140210), (404, 70105), (505, 56084), (707, 40060), (1010, 28042), (1414, 20030), (2003, 14140), (2020, 14021), (2828, 10015), (3535, 8012), (4006, 7070)]