28870900

素因数分解:

$2^2\times 5^2\times {\mathrm{103}}^1\times {\mathrm{2803}}^1$

素因数の和:2920

約数の個数: 36

約数和(自身を含む): 63280672

約数和(自身を除く): 34409772

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 103, 206, 412, 515, 1030, 2060, 2575, 2803, 5150, 5606, 10300, 11212, 14015, 28030, 56060, 70075, 140150, 280300, 288709, 577418, 1154836, 1443545, 2887090, 5774180, 7217725, 14435450, 28870900]

約数ペア:

[(1, 28870900), (2, 14435450), (4, 7217725), (5, 5774180), (10, 2887090), (20, 1443545), (25, 1154836), (50, 577418), (100, 288709), (103, 280300), (206, 140150), (412, 70075), (515, 56060), (1030, 28030), (2060, 14015), (2575, 11212), (2803, 10300), (5150, 5606)]