12785000

素因数分解:

$2^3\times 5^4\times {\mathrm{2557}}^1$

素因数の和:2583

約数の個数: 40

約数和(自身を含む): 29966970

約数和(自身を除く): 17181970

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 2557, 5000, 5114, 10228, 12785, 20456, 25570, 51140, 63925, 102280, 127850, 255700, 319625, 511400, 639250, 1278500, 1598125, 2557000, 3196250, 6392500, 12785000]

約数ペア:

[(1, 12785000), (2, 6392500), (4, 3196250), (5, 2557000), (8, 1598125), (10, 1278500), (20, 639250), (25, 511400), (40, 319625), (50, 255700), (100, 127850), (125, 102280), (200, 63925), (250, 51140), (500, 25570), (625, 20456), (1000, 12785), (1250, 10228), (2500, 5114), (2557, 5000)]