28260820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{337}}^1\times {\mathrm{599}}^1$

素因数の和:952

約数の個数: 48

約数和(自身を含む): 68140800

約数和(自身を除く): 39879980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 337, 599, 674, 1198, 1348, 1685, 2359, 2396, 2995, 3370, 4193, 4718, 5990, 6740, 8386, 9436, 11795, 11980, 16772, 20965, 23590, 41930, 47180, 83860, 201863, 403726, 807452, 1009315, 1413041, 2018630, 2826082, 4037260, 5652164, 7065205, 14130410, 28260820]

約数ペア:

[(1, 28260820), (2, 14130410), (4, 7065205), (5, 5652164), (7, 4037260), (10, 2826082), (14, 2018630), (20, 1413041), (28, 1009315), (35, 807452), (70, 403726), (140, 201863), (337, 83860), (599, 47180), (674, 41930), (1198, 23590), (1348, 20965), (1685, 16772), (2359, 11980), (2396, 11795), (2995, 9436), (3370, 8386), (4193, 6740), (4718, 5990)]