4500000

素因数分解:

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

素因数の和:46

約数の個数: 126

約数和(自身を含む): 15995889

約数和(自身を除く): 11495889

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 30, 32, 36, 40, 45, 48, 50, 60, 72, 75, 80, 90, 96, 100, 120, 125, 144, 150, 160, 180, 200, 225, 240, 250, 288, 300, 360, 375, 400, 450, 480, 500, 600, 625, 720, 750, 800, 900, 1000, 1125, 1200, 1250, 1440, 1500, 1800, 1875, 2000, 2250, 2400, 2500, 3000, 3125, 3600, 3750, 4000, 4500, 5000, 5625, 6000, 6250, 7200, 7500, 9000, 9375, 10000, 11250, 12000, 12500, 15000, 15625, 18000, 18750, 20000, 22500, 25000, 28125, 30000, 31250, 36000, 37500, 45000, 46875, 50000, 56250, 60000, 62500, 75000, 90000, 93750, 100000, 112500, 125000, 140625, 150000, 180000, 187500, 225000, 250000, 281250, 300000, 375000, 450000, 500000, 562500, 750000, 900000, 1125000, 1500000, 2250000, 4500000]

約数ペア:

[(1, 4500000), (2, 2250000), (3, 1500000), (4, 1125000), (5, 900000), (6, 750000), (8, 562500), (9, 500000), (10, 450000), (12, 375000), (15, 300000), (16, 281250), (18, 250000), (20, 225000), (24, 187500), (25, 180000), (30, 150000), (32, 140625), (36, 125000), (40, 112500), (45, 100000), (48, 93750), (50, 90000), (60, 75000), (72, 62500), (75, 60000), (80, 56250), (90, 50000), (96, 46875), (100, 45000), (120, 37500), (125, 36000), (144, 31250), (150, 30000), (160, 28125), (180, 25000), (200, 22500), (225, 20000), (240, 18750), (250, 18000), (288, 15625), (300, 15000), (360, 12500), (375, 12000), (400, 11250), (450, 10000), (480, 9375), (500, 9000), (600, 7500), (625, 7200), (720, 6250), (750, 6000), (800, 5625), (900, 5000), (1000, 4500), (1125, 4000), (1200, 3750), (1250, 3600), (1440, 3125), (1500, 3000), (1800, 2500), (1875, 2400), (2000, 2250)]