20372828

素因数分解:

$2^2\times 7^3\times {\mathrm{31}}^1\times {\mathrm{479}}^1$

素因数の和:535

約数の個数: 48

約数和(自身を含む): 43008000

約数和(自身を除く): 22635172

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 62, 98, 124, 196, 217, 343, 434, 479, 686, 868, 958, 1372, 1519, 1916, 3038, 3353, 6076, 6706, 10633, 13412, 14849, 21266, 23471, 29698, 42532, 46942, 59396, 93884, 103943, 164297, 207886, 328594, 415772, 657188, 727601, 1455202, 2910404, 5093207, 10186414, 20372828]

約数ペア:

[(1, 20372828), (2, 10186414), (4, 5093207), (7, 2910404), (14, 1455202), (28, 727601), (31, 657188), (49, 415772), (62, 328594), (98, 207886), (124, 164297), (196, 103943), (217, 93884), (343, 59396), (434, 46942), (479, 42532), (686, 29698), (868, 23471), (958, 21266), (1372, 14849), (1519, 13412), (1916, 10633), (3038, 6706), (3353, 6076)]