21750000

素因数分解:

$2^4\times 3^1\times 5^6\times {\mathrm{29}}^1$

素因数の和:70

約数の個数: 140

約数和(自身を含む): 72655320

約数和(自身を除く): 50905320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 29, 30, 40, 48, 50, 58, 60, 75, 80, 87, 100, 116, 120, 125, 145, 150, 174, 200, 232, 240, 250, 290, 300, 348, 375, 400, 435, 464, 500, 580, 600, 625, 696, 725, 750, 870, 1000, 1160, 1200, 1250, 1392, 1450, 1500, 1740, 1875, 2000, 2175, 2320, 2500, 2900, 3000, 3125, 3480, 3625, 3750, 4350, 5000, 5800, 6000, 6250, 6960, 7250, 7500, 8700, 9375, 10000, 10875, 11600, 12500, 14500, 15000, 15625, 17400, 18125, 18750, 21750, 25000, 29000, 30000, 31250, 34800, 36250, 37500, 43500, 46875, 50000, 54375, 58000, 62500, 72500, 75000, 87000, 90625, 93750, 108750, 125000, 145000, 150000, 174000, 181250, 187500, 217500, 250000, 271875, 290000, 362500, 375000, 435000, 453125, 543750, 725000, 750000, 870000, 906250, 1087500, 1359375, 1450000, 1812500, 2175000, 2718750, 3625000, 4350000, 5437500, 7250000, 10875000, 21750000]

約数ペア:

[(1, 21750000), (2, 10875000), (3, 7250000), (4, 5437500), (5, 4350000), (6, 3625000), (8, 2718750), (10, 2175000), (12, 1812500), (15, 1450000), (16, 1359375), (20, 1087500), (24, 906250), (25, 870000), (29, 750000), (30, 725000), (40, 543750), (48, 453125), (50, 435000), (58, 375000), (60, 362500), (75, 290000), (80, 271875), (87, 250000), (100, 217500), (116, 187500), (120, 181250), (125, 174000), (145, 150000), (150, 145000), (174, 125000), (200, 108750), (232, 93750), (240, 90625), (250, 87000), (290, 75000), (300, 72500), (348, 62500), (375, 58000), (400, 54375), (435, 50000), (464, 46875), (500, 43500), (580, 37500), (600, 36250), (625, 34800), (696, 31250), (725, 30000), (750, 29000), (870, 25000), (1000, 21750), (1160, 18750), (1200, 18125), (1250, 17400), (1392, 15625), (1450, 15000), (1500, 14500), (1740, 12500), (1875, 11600), (2000, 10875), (2175, 10000), (2320, 9375), (2500, 8700), (2900, 7500), (3000, 7250), (3125, 6960), (3480, 6250), (3625, 6000), (3750, 5800), (4350, 5000)]