49988000

素因数分解:

$2^5\times 5^3\times {\mathrm{12497}}^1$

素因数の和:12522

約数の個数: 48

約数和(自身を含む): 122830344

約数和(自身を除く): 72842344

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, 12497, 24994, 49988, 62485, 99976, 124970, 199952, 249940, 312425, 399904, 499880, 624850, 999760, 1249700, 1562125, 1999520, 2499400, 3124250, 4998800, 6248500, 9997600, 12497000, 24994000, 49988000]

約数ペア:

[(1, 49988000), (2, 24994000), (4, 12497000), (5, 9997600), (8, 6248500), (10, 4998800), (16, 3124250), (20, 2499400), (25, 1999520), (32, 1562125), (40, 1249700), (50, 999760), (80, 624850), (100, 499880), (125, 399904), (160, 312425), (200, 249940), (250, 199952), (400, 124970), (500, 99976), (800, 62485), (1000, 49988), (2000, 24994), (4000, 12497)]