20718000

素因数分解:

$2^4\times 3^2\times 5^3\times {\mathrm{1151}}^1$

素因数の和:1180

約数の個数: 120

約数和(自身を含む): 72423936

約数和(自身を除く): 51705936

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 30, 36, 40, 45, 48, 50, 60, 72, 75, 80, 90, 100, 120, 125, 144, 150, 180, 200, 225, 240, 250, 300, 360, 375, 400, 450, 500, 600, 720, 750, 900, 1000, 1125, 1151, 1200, 1500, 1800, 2000, 2250, 2302, 3000, 3453, 3600, 4500, 4604, 5755, 6000, 6906, 9000, 9208, 10359, 11510, 13812, 17265, 18000, 18416, 20718, 23020, 27624, 28775, 34530, 41436, 46040, 51795, 55248, 57550, 69060, 82872, 86325, 92080, 103590, 115100, 138120, 143875, 165744, 172650, 207180, 230200, 258975, 276240, 287750, 345300, 414360, 431625, 460400, 517950, 575500, 690600, 828720, 863250, 1035900, 1151000, 1294875, 1381200, 1726500, 2071800, 2302000, 2589750, 3453000, 4143600, 5179500, 6906000, 10359000, 20718000]

約数ペア:

[(1, 20718000), (2, 10359000), (3, 6906000), (4, 5179500), (5, 4143600), (6, 3453000), (8, 2589750), (9, 2302000), (10, 2071800), (12, 1726500), (15, 1381200), (16, 1294875), (18, 1151000), (20, 1035900), (24, 863250), (25, 828720), (30, 690600), (36, 575500), (40, 517950), (45, 460400), (48, 431625), (50, 414360), (60, 345300), (72, 287750), (75, 276240), (80, 258975), (90, 230200), (100, 207180), (120, 172650), (125, 165744), (144, 143875), (150, 138120), (180, 115100), (200, 103590), (225, 92080), (240, 86325), (250, 82872), (300, 69060), (360, 57550), (375, 55248), (400, 51795), (450, 46040), (500, 41436), (600, 34530), (720, 28775), (750, 27624), (900, 23020), (1000, 20718), (1125, 18416), (1151, 18000), (1200, 17265), (1500, 13812), (1800, 11510), (2000, 10359), (2250, 9208), (2302, 9000), (3000, 6906), (3453, 6000), (3600, 5755), (4500, 4604)]