20400000

素因数分解:

$2^7\times 3^1\times 5^5\times {\mathrm{17}}^1$

素因数の和:59

約数の個数: 192

約数和(自身を含む): 71714160

約数和(自身を除く): 51314160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 25, 30, 32, 34, 40, 48, 50, 51, 60, 64, 68, 75, 80, 85, 96, 100, 102, 120, 125, 128, 136, 150, 160, 170, 192, 200, 204, 240, 250, 255, 272, 300, 320, 340, 375, 384, 400, 408, 425, 480, 500, 510, 544, 600, 625, 640, 680, 750, 800, 816, 850, 960, 1000, 1020, 1088, 1200, 1250, 1275, 1360, 1500, 1600, 1632, 1700, 1875, 1920, 2000, 2040, 2125, 2176, 2400, 2500, 2550, 2720, 3000, 3125, 3200, 3264, 3400, 3750, 4000, 4080, 4250, 4800, 5000, 5100, 5440, 6000, 6250, 6375, 6528, 6800, 7500, 8000, 8160, 8500, 9375, 9600, 10000, 10200, 10625, 10880, 12000, 12500, 12750, 13600, 15000, 16000, 16320, 17000, 18750, 20000, 20400, 21250, 24000, 25000, 25500, 27200, 30000, 31875, 32640, 34000, 37500, 40000, 40800, 42500, 48000, 50000, 51000, 53125, 54400, 60000, 63750, 68000, 75000, 80000, 81600, 85000, 100000, 102000, 106250, 120000, 127500, 136000, 150000, 159375, 163200, 170000, 200000, 204000, 212500, 240000, 255000, 272000, 300000, 318750, 340000, 400000, 408000, 425000, 510000, 600000, 637500, 680000, 816000, 850000, 1020000, 1200000, 1275000, 1360000, 1700000, 2040000, 2550000, 3400000, 4080000, 5100000, 6800000, 10200000, 20400000]

約数ペア:

[(1, 20400000), (2, 10200000), (3, 6800000), (4, 5100000), (5, 4080000), (6, 3400000), (8, 2550000), (10, 2040000), (12, 1700000), (15, 1360000), (16, 1275000), (17, 1200000), (20, 1020000), (24, 850000), (25, 816000), (30, 680000), (32, 637500), (34, 600000), (40, 510000), (48, 425000), (50, 408000), (51, 400000), (60, 340000), (64, 318750), (68, 300000), (75, 272000), (80, 255000), (85, 240000), (96, 212500), (100, 204000), (102, 200000), (120, 170000), (125, 163200), (128, 159375), (136, 150000), (150, 136000), (160, 127500), (170, 120000), (192, 106250), (200, 102000), (204, 100000), (240, 85000), (250, 81600), (255, 80000), (272, 75000), (300, 68000), (320, 63750), (340, 60000), (375, 54400), (384, 53125), (400, 51000), (408, 50000), (425, 48000), (480, 42500), (500, 40800), (510, 40000), (544, 37500), (600, 34000), (625, 32640), (640, 31875), (680, 30000), (750, 27200), (800, 25500), (816, 25000), (850, 24000), (960, 21250), (1000, 20400), (1020, 20000), (1088, 18750), (1200, 17000), (1250, 16320), (1275, 16000), (1360, 15000), (1500, 13600), (1600, 12750), (1632, 12500), (1700, 12000), (1875, 10880), (1920, 10625), (2000, 10200), (2040, 10000), (2125, 9600), (2176, 9375), (2400, 8500), (2500, 8160), (2550, 8000), (2720, 7500), (3000, 6800), (3125, 6528), (3200, 6375), (3264, 6250), (3400, 6000), (3750, 5440), (4000, 5100), (4080, 5000), (4250, 4800)]