21180000

素因数分解:

$2^5\times 3^1\times 5^4\times {\mathrm{353}}^1$

素因数の和:386

約数の個数: 120

約数和(自身を含む): 69671448

約数和(自身を除く): 48491448

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 60, 75, 80, 96, 100, 120, 125, 150, 160, 200, 240, 250, 300, 353, 375, 400, 480, 500, 600, 625, 706, 750, 800, 1000, 1059, 1200, 1250, 1412, 1500, 1765, 1875, 2000, 2118, 2400, 2500, 2824, 3000, 3530, 3750, 4000, 4236, 5000, 5295, 5648, 6000, 7060, 7500, 8472, 8825, 10000, 10590, 11296, 12000, 14120, 15000, 16944, 17650, 20000, 21180, 26475, 28240, 30000, 33888, 35300, 42360, 44125, 52950, 56480, 60000, 70600, 84720, 88250, 105900, 132375, 141200, 169440, 176500, 211800, 220625, 264750, 282400, 353000, 423600, 441250, 529500, 661875, 706000, 847200, 882500, 1059000, 1323750, 1412000, 1765000, 2118000, 2647500, 3530000, 4236000, 5295000, 7060000, 10590000, 21180000]

約数ペア:

[(1, 21180000), (2, 10590000), (3, 7060000), (4, 5295000), (5, 4236000), (6, 3530000), (8, 2647500), (10, 2118000), (12, 1765000), (15, 1412000), (16, 1323750), (20, 1059000), (24, 882500), (25, 847200), (30, 706000), (32, 661875), (40, 529500), (48, 441250), (50, 423600), (60, 353000), (75, 282400), (80, 264750), (96, 220625), (100, 211800), (120, 176500), (125, 169440), (150, 141200), (160, 132375), (200, 105900), (240, 88250), (250, 84720), (300, 70600), (353, 60000), (375, 56480), (400, 52950), (480, 44125), (500, 42360), (600, 35300), (625, 33888), (706, 30000), (750, 28240), (800, 26475), (1000, 21180), (1059, 20000), (1200, 17650), (1250, 16944), (1412, 15000), (1500, 14120), (1765, 12000), (1875, 11296), (2000, 10590), (2118, 10000), (2400, 8825), (2500, 8472), (2824, 7500), (3000, 7060), (3530, 6000), (3750, 5648), (4000, 5295), (4236, 5000)]