127910000

素因数分解:

$2^4\times 5^4\times {\mathrm{12791}}^1$

素因数の和:12819

約数の個数: 50

約数和(自身を含む): 309707112

約数和(自身を除く): 181797112

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, 5000, 10000, 12791, 25582, 51164, 63955, 102328, 127910, 204656, 255820, 319775, 511640, 639550, 1023280, 1279100, 1598875, 2558200, 3197750, 5116400, 6395500, 7994375, 12791000, 15988750, 25582000, 31977500, 63955000, 127910000]

約数ペア:

[(1, 127910000), (2, 63955000), (4, 31977500), (5, 25582000), (8, 15988750), (10, 12791000), (16, 7994375), (20, 6395500), (25, 5116400), (40, 3197750), (50, 2558200), (80, 1598875), (100, 1279100), (125, 1023280), (200, 639550), (250, 511640), (400, 319775), (500, 255820), (625, 204656), (1000, 127910), (1250, 102328), (2000, 63955), (2500, 51164), (5000, 25582), (10000, 12791)]