19500000

素因数分解:

$2^5\times 3^1\times 5^6\times {\mathrm{13}}^1$

素因数の和:56

約数の個数: 168

約数和(自身を含む): 68905368

約数和(自身を除く): 49405368

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 25, 26, 30, 32, 39, 40, 48, 50, 52, 60, 65, 75, 78, 80, 96, 100, 104, 120, 125, 130, 150, 156, 160, 195, 200, 208, 240, 250, 260, 300, 312, 325, 375, 390, 400, 416, 480, 500, 520, 600, 624, 625, 650, 750, 780, 800, 975, 1000, 1040, 1200, 1248, 1250, 1300, 1500, 1560, 1625, 1875, 1950, 2000, 2080, 2400, 2500, 2600, 3000, 3120, 3125, 3250, 3750, 3900, 4000, 4875, 5000, 5200, 6000, 6240, 6250, 6500, 7500, 7800, 8125, 9375, 9750, 10000, 10400, 12000, 12500, 13000, 15000, 15600, 15625, 16250, 18750, 19500, 20000, 24375, 25000, 26000, 30000, 31200, 31250, 32500, 37500, 39000, 40625, 46875, 48750, 50000, 52000, 60000, 62500, 65000, 75000, 78000, 81250, 93750, 97500, 100000, 121875, 125000, 130000, 150000, 156000, 162500, 187500, 195000, 203125, 243750, 250000, 260000, 300000, 325000, 375000, 390000, 406250, 487500, 500000, 609375, 650000, 750000, 780000, 812500, 975000, 1218750, 1300000, 1500000, 1625000, 1950000, 2437500, 3250000, 3900000, 4875000, 6500000, 9750000, 19500000]

約数ペア:

[(1, 19500000), (2, 9750000), (3, 6500000), (4, 4875000), (5, 3900000), (6, 3250000), (8, 2437500), (10, 1950000), (12, 1625000), (13, 1500000), (15, 1300000), (16, 1218750), (20, 975000), (24, 812500), (25, 780000), (26, 750000), (30, 650000), (32, 609375), (39, 500000), (40, 487500), (48, 406250), (50, 390000), (52, 375000), (60, 325000), (65, 300000), (75, 260000), (78, 250000), (80, 243750), (96, 203125), (100, 195000), (104, 187500), (120, 162500), (125, 156000), (130, 150000), (150, 130000), (156, 125000), (160, 121875), (195, 100000), (200, 97500), (208, 93750), (240, 81250), (250, 78000), (260, 75000), (300, 65000), (312, 62500), (325, 60000), (375, 52000), (390, 50000), (400, 48750), (416, 46875), (480, 40625), (500, 39000), (520, 37500), (600, 32500), (624, 31250), (625, 31200), (650, 30000), (750, 26000), (780, 25000), (800, 24375), (975, 20000), (1000, 19500), (1040, 18750), (1200, 16250), (1248, 15625), (1250, 15600), (1300, 15000), (1500, 13000), (1560, 12500), (1625, 12000), (1875, 10400), (1950, 10000), (2000, 9750), (2080, 9375), (2400, 8125), (2500, 7800), (2600, 7500), (3000, 6500), (3120, 6250), (3125, 6240), (3250, 6000), (3750, 5200), (3900, 5000), (4000, 4875)]