2545000

素因数分解:

$2^3\times 5^4\times {\mathrm{509}}^1$

素因数の和:535

約数の個数: 40

約数和(自身を含む): 5974650

約数和(自身を除く): 3429650

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 509, 625, 1000, 1018, 1250, 2036, 2500, 2545, 4072, 5000, 5090, 10180, 12725, 20360, 25450, 50900, 63625, 101800, 127250, 254500, 318125, 509000, 636250, 1272500, 2545000]

約数ペア:

[(1, 2545000), (2, 1272500), (4, 636250), (5, 509000), (8, 318125), (10, 254500), (20, 127250), (25, 101800), (40, 63625), (50, 50900), (100, 25450), (125, 20360), (200, 12725), (250, 10180), (500, 5090), (509, 5000), (625, 4072), (1000, 2545), (1018, 2500), (1250, 2036)]