18710000

素因数分解:

$2^4\times 5^4\times {\mathrm{1871}}^1$

素因数の和:1899

約数の個数: 50

約数和(自身を含む): 45322992

約数和(自身を除く): 26612992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 1871, 2000, 2500, 3742, 5000, 7484, 9355, 10000, 14968, 18710, 29936, 37420, 46775, 74840, 93550, 149680, 187100, 233875, 374200, 467750, 748400, 935500, 1169375, 1871000, 2338750, 3742000, 4677500, 9355000, 18710000]

約数ペア:

[(1, 18710000), (2, 9355000), (4, 4677500), (5, 3742000), (8, 2338750), (10, 1871000), (16, 1169375), (20, 935500), (25, 748400), (40, 467750), (50, 374200), (80, 233875), (100, 187100), (125, 149680), (200, 93550), (250, 74840), (400, 46775), (500, 37420), (625, 29936), (1000, 18710), (1250, 14968), (1871, 10000), (2000, 9355), (2500, 7484), (3742, 5000)]