19885500

素因数分解:

$2^2\times 3^4\times 5^3\times {\mathrm{491}}^1$

素因数の和:522

約数の個数: 120

約数和(自身を含む): 65008944

約数和(自身を除く): 45123444

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 75, 81, 90, 100, 108, 125, 135, 150, 162, 180, 225, 250, 270, 300, 324, 375, 405, 450, 491, 500, 540, 675, 750, 810, 900, 982, 1125, 1350, 1473, 1500, 1620, 1964, 2025, 2250, 2455, 2700, 2946, 3375, 4050, 4419, 4500, 4910, 5892, 6750, 7365, 8100, 8838, 9820, 10125, 12275, 13257, 13500, 14730, 17676, 20250, 22095, 24550, 26514, 29460, 36825, 39771, 40500, 44190, 49100, 53028, 61375, 66285, 73650, 79542, 88380, 110475, 122750, 132570, 147300, 159084, 184125, 198855, 220950, 245500, 265140, 331425, 368250, 397710, 441900, 552375, 662850, 736500, 795420, 994275, 1104750, 1325700, 1657125, 1988550, 2209500, 3314250, 3977100, 4971375, 6628500, 9942750, 19885500]

約数ペア:

[(1, 19885500), (2, 9942750), (3, 6628500), (4, 4971375), (5, 3977100), (6, 3314250), (9, 2209500), (10, 1988550), (12, 1657125), (15, 1325700), (18, 1104750), (20, 994275), (25, 795420), (27, 736500), (30, 662850), (36, 552375), (45, 441900), (50, 397710), (54, 368250), (60, 331425), (75, 265140), (81, 245500), (90, 220950), (100, 198855), (108, 184125), (125, 159084), (135, 147300), (150, 132570), (162, 122750), (180, 110475), (225, 88380), (250, 79542), (270, 73650), (300, 66285), (324, 61375), (375, 53028), (405, 49100), (450, 44190), (491, 40500), (500, 39771), (540, 36825), (675, 29460), (750, 26514), (810, 24550), (900, 22095), (982, 20250), (1125, 17676), (1350, 14730), (1473, 13500), (1500, 13257), (1620, 12275), (1964, 10125), (2025, 9820), (2250, 8838), (2455, 8100), (2700, 7365), (2946, 6750), (3375, 5892), (4050, 4910), (4419, 4500)]