20688000

素因数分解:

$2^7\times 3^1\times 5^3\times {\mathrm{431}}^1$

素因数の和:463

約数の個数: 128

約数和(自身を含む): 68739840

約数和(自身を除く): 48051840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 60, 64, 75, 80, 96, 100, 120, 125, 128, 150, 160, 192, 200, 240, 250, 300, 320, 375, 384, 400, 431, 480, 500, 600, 640, 750, 800, 862, 960, 1000, 1200, 1293, 1500, 1600, 1724, 1920, 2000, 2155, 2400, 2586, 3000, 3200, 3448, 4000, 4310, 4800, 5172, 6000, 6465, 6896, 8000, 8620, 9600, 10344, 10775, 12000, 12930, 13792, 16000, 17240, 20688, 21550, 24000, 25860, 27584, 32325, 34480, 41376, 43100, 48000, 51720, 53875, 55168, 64650, 68960, 82752, 86200, 103440, 107750, 129300, 137920, 161625, 165504, 172400, 206880, 215500, 258600, 275840, 323250, 344800, 413760, 431000, 517200, 646500, 689600, 827520, 862000, 1034400, 1293000, 1379200, 1724000, 2068800, 2586000, 3448000, 4137600, 5172000, 6896000, 10344000, 20688000]

約数ペア:

[(1, 20688000), (2, 10344000), (3, 6896000), (4, 5172000), (5, 4137600), (6, 3448000), (8, 2586000), (10, 2068800), (12, 1724000), (15, 1379200), (16, 1293000), (20, 1034400), (24, 862000), (25, 827520), (30, 689600), (32, 646500), (40, 517200), (48, 431000), (50, 413760), (60, 344800), (64, 323250), (75, 275840), (80, 258600), (96, 215500), (100, 206880), (120, 172400), (125, 165504), (128, 161625), (150, 137920), (160, 129300), (192, 107750), (200, 103440), (240, 86200), (250, 82752), (300, 68960), (320, 64650), (375, 55168), (384, 53875), (400, 51720), (431, 48000), (480, 43100), (500, 41376), (600, 34480), (640, 32325), (750, 27584), (800, 25860), (862, 24000), (960, 21550), (1000, 20688), (1200, 17240), (1293, 16000), (1500, 13792), (1600, 12930), (1724, 12000), (1920, 10775), (2000, 10344), (2155, 9600), (2400, 8620), (2586, 8000), (3000, 6896), (3200, 6465), (3448, 6000), (4000, 5172), (4310, 4800)]