15000000

素因数分解:

$2^6\times 3^1\times 5^7$

素因数の和:50

約数の個数: 112

約数和(自身を含む): 49609248

約数和(自身を除く): 34609248

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, 150, 160, 192, 200, 240, 250, 300, 320, 375, 400, 480, 500, 600, 625, 750, 800, 960, 1000, 1200, 1250, 1500, 1600, 1875, 2000, 2400, 2500, 3000, 3125, 3750, 4000, 4800, 5000, 6000, 6250, 7500, 8000, 9375, 10000, 12000, 12500, 15000, 15625, 18750, 20000, 24000, 25000, 30000, 31250, 37500, 40000, 46875, 50000, 60000, 62500, 75000, 78125, 93750, 100000, 120000, 125000, 150000, 156250, 187500, 200000, 234375, 250000, 300000, 312500, 375000, 468750, 500000, 600000, 625000, 750000, 937500, 1000000, 1250000, 1500000, 1875000, 2500000, 3000000, 3750000, 5000000, 7500000, 15000000]

約数ペア:

[(1, 15000000), (2, 7500000), (3, 5000000), (4, 3750000), (5, 3000000), (6, 2500000), (8, 1875000), (10, 1500000), (12, 1250000), (15, 1000000), (16, 937500), (20, 750000), (24, 625000), (25, 600000), (30, 500000), (32, 468750), (40, 375000), (48, 312500), (50, 300000), (60, 250000), (64, 234375), (75, 200000), (80, 187500), (96, 156250), (100, 150000), (120, 125000), (125, 120000), (150, 100000), (160, 93750), (192, 78125), (200, 75000), (240, 62500), (250, 60000), (300, 50000), (320, 46875), (375, 40000), (400, 37500), (480, 31250), (500, 30000), (600, 25000), (625, 24000), (750, 20000), (800, 18750), (960, 15625), (1000, 15000), (1200, 12500), (1250, 12000), (1500, 10000), (1600, 9375), (1875, 8000), (2000, 7500), (2400, 6250), (2500, 6000), (3000, 5000), (3125, 4800), (3750, 4000)]