25570000

素因数分解:

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

素因数の和:2585

約数の個数: 50

約数和(自身を含む): 61931738

約数和(自身を除く): 36361738

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 2557, 5000, 5114, 10000, 10228, 12785, 20456, 25570, 40912, 51140, 63925, 102280, 127850, 204560, 255700, 319625, 511400, 639250, 1022800, 1278500, 1598125, 2557000, 3196250, 5114000, 6392500, 12785000, 25570000]

約数ペア:

[(1, 25570000), (2, 12785000), (4, 6392500), (5, 5114000), (8, 3196250), (10, 2557000), (16, 1598125), (20, 1278500), (25, 1022800), (40, 639250), (50, 511400), (80, 319625), (100, 255700), (125, 204560), (200, 127850), (250, 102280), (400, 63925), (500, 51140), (625, 40912), (1000, 25570), (1250, 20456), (2000, 12785), (2500, 10228), (2557, 10000), (5000, 5114)]