4985000

素因数分解:

$2^3\times 5^4\times {\mathrm{997}}^1$

素因数の和:1023

約数の個数: 40

約数和(自身を含む): 11691570

約数和(自身を除く): 6706570

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 997, 1000, 1250, 1994, 2500, 3988, 4985, 5000, 7976, 9970, 19940, 24925, 39880, 49850, 99700, 124625, 199400, 249250, 498500, 623125, 997000, 1246250, 2492500, 4985000]

約数ペア:

[(1, 4985000), (2, 2492500), (4, 1246250), (5, 997000), (8, 623125), (10, 498500), (20, 249250), (25, 199400), (40, 124625), (50, 99700), (100, 49850), (125, 39880), (200, 24925), (250, 19940), (500, 9970), (625, 7976), (997, 5000), (1000, 4985), (1250, 3988), (1994, 2500)]