20740500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{419}}^1$

素因数の和:455

約数の個数: 144

約数和(自身を含む): 71547840

約数和(自身を除く): 50807340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 25, 30, 33, 36, 44, 45, 50, 55, 60, 66, 75, 90, 99, 100, 110, 125, 132, 150, 165, 180, 198, 220, 225, 250, 275, 300, 330, 375, 396, 419, 450, 495, 500, 550, 660, 750, 825, 838, 900, 990, 1100, 1125, 1257, 1375, 1500, 1650, 1676, 1980, 2095, 2250, 2475, 2514, 2750, 3300, 3771, 4125, 4190, 4500, 4609, 4950, 5028, 5500, 6285, 7542, 8250, 8380, 9218, 9900, 10475, 12375, 12570, 13827, 15084, 16500, 18436, 18855, 20950, 23045, 24750, 25140, 27654, 31425, 37710, 41481, 41900, 46090, 49500, 52375, 55308, 62850, 69135, 75420, 82962, 92180, 94275, 104750, 115225, 125700, 138270, 157125, 165924, 188550, 207405, 209500, 230450, 276540, 314250, 345675, 377100, 414810, 460900, 471375, 576125, 628500, 691350, 829620, 942750, 1037025, 1152250, 1382700, 1728375, 1885500, 2074050, 2304500, 3456750, 4148100, 5185125, 6913500, 10370250, 20740500]

約数ペア:

[(1, 20740500), (2, 10370250), (3, 6913500), (4, 5185125), (5, 4148100), (6, 3456750), (9, 2304500), (10, 2074050), (11, 1885500), (12, 1728375), (15, 1382700), (18, 1152250), (20, 1037025), (22, 942750), (25, 829620), (30, 691350), (33, 628500), (36, 576125), (44, 471375), (45, 460900), (50, 414810), (55, 377100), (60, 345675), (66, 314250), (75, 276540), (90, 230450), (99, 209500), (100, 207405), (110, 188550), (125, 165924), (132, 157125), (150, 138270), (165, 125700), (180, 115225), (198, 104750), (220, 94275), (225, 92180), (250, 82962), (275, 75420), (300, 69135), (330, 62850), (375, 55308), (396, 52375), (419, 49500), (450, 46090), (495, 41900), (500, 41481), (550, 37710), (660, 31425), (750, 27654), (825, 25140), (838, 24750), (900, 23045), (990, 20950), (1100, 18855), (1125, 18436), (1257, 16500), (1375, 15084), (1500, 13827), (1650, 12570), (1676, 12375), (1980, 10475), (2095, 9900), (2250, 9218), (2475, 8380), (2514, 8250), (2750, 7542), (3300, 6285), (3771, 5500), (4125, 5028), (4190, 4950), (4500, 4609)]