91891000

素因数分解:

$2^3\times 5^3\times {\mathrm{43}}^1\times {\mathrm{2137}}^1$

素因数の和:2201

約数の個数: 64

約数和(自身を含む): 220128480

約数和(自身を除く): 128237480

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 125, 172, 200, 215, 250, 344, 430, 500, 860, 1000, 1075, 1720, 2137, 2150, 4274, 4300, 5375, 8548, 8600, 10685, 10750, 17096, 21370, 21500, 42740, 43000, 53425, 85480, 91891, 106850, 183782, 213700, 267125, 367564, 427400, 459455, 534250, 735128, 918910, 1068500, 1837820, 2137000, 2297275, 3675640, 4594550, 9189100, 11486375, 18378200, 22972750, 45945500, 91891000]

約数ペア:

[(1, 91891000), (2, 45945500), (4, 22972750), (5, 18378200), (8, 11486375), (10, 9189100), (20, 4594550), (25, 3675640), (40, 2297275), (43, 2137000), (50, 1837820), (86, 1068500), (100, 918910), (125, 735128), (172, 534250), (200, 459455), (215, 427400), (250, 367564), (344, 267125), (430, 213700), (500, 183782), (860, 106850), (1000, 91891), (1075, 85480), (1720, 53425), (2137, 43000), (2150, 42740), (4274, 21500), (4300, 21370), (5375, 17096), (8548, 10750), (8600, 10685)]