27988000

素因数分解:

$2^5\times 5^3\times {\mathrm{6997}}^1$

素因数の和:7022

約数の個数: 48

約数和(自身を含む): 68776344

約数和(自身を除く): 40788344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 6997, 13994, 27988, 34985, 55976, 69970, 111952, 139940, 174925, 223904, 279880, 349850, 559760, 699700, 874625, 1119520, 1399400, 1749250, 2798800, 3498500, 5597600, 6997000, 13994000, 27988000]

約数ペア:

[(1, 27988000), (2, 13994000), (4, 6997000), (5, 5597600), (8, 3498500), (10, 2798800), (16, 1749250), (20, 1399400), (25, 1119520), (32, 874625), (40, 699700), (50, 559760), (80, 349850), (100, 279880), (125, 223904), (160, 174925), (200, 139940), (250, 111952), (400, 69970), (500, 55976), (800, 34985), (1000, 27988), (2000, 13994), (4000, 6997)]