2000977480

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{449}}^1\times {\mathrm{2591}}^1$

素因数の和:3094

約数の個数: 64

約数和(自身を含む): 4618944000

約数和(自身を除く): 2617966520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 449, 860, 898, 1720, 1796, 2245, 2591, 3592, 4490, 5182, 8980, 10364, 12955, 17960, 19307, 20728, 25910, 38614, 51820, 77228, 96535, 103640, 111413, 154456, 193070, 222826, 386140, 445652, 557065, 772280, 891304, 1114130, 1163359, 2228260, 2326718, 4456520, 4653436, 5816795, 9306872, 11633590, 23267180, 46534360, 50024437, 100048874, 200097748, 250122185, 400195496, 500244370, 1000488740, 2000977480]

約数ペア:

[(1, 2000977480), (2, 1000488740), (4, 500244370), (5, 400195496), (8, 250122185), (10, 200097748), (20, 100048874), (40, 50024437), (43, 46534360), (86, 23267180), (172, 11633590), (215, 9306872), (344, 5816795), (430, 4653436), (449, 4456520), (860, 2326718), (898, 2228260), (1720, 1163359), (1796, 1114130), (2245, 891304), (2591, 772280), (3592, 557065), (4490, 445652), (5182, 386140), (8980, 222826), (10364, 193070), (12955, 154456), (17960, 111413), (19307, 103640), (20728, 96535), (25910, 77228), (38614, 51820)]