20255760

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4019}}^1$

素因数の和:4045

約数の個数: 120

約数和(自身を含む): 77762880

約数和(自身を除く): 57507120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 4019, 5040, 8038, 12057, 16076, 20095, 24114, 28133, 32152, 36171, 40190, 48228, 56266, 60285, 64304, 72342, 80380, 84399, 96456, 112532, 120570, 140665, 144684, 160760, 168798, 180855, 192912, 225064, 241140, 253197, 281330, 289368, 321520, 337596, 361710, 421995, 450128, 482280, 506394, 562660, 578736, 675192, 723420, 843990, 964560, 1012788, 1125320, 1265985, 1350384, 1446840, 1687980, 2025576, 2250640, 2531970, 2893680, 3375960, 4051152, 5063940, 6751920, 10127880, 20255760]

約数ペア:

[(1, 20255760), (2, 10127880), (3, 6751920), (4, 5063940), (5, 4051152), (6, 3375960), (7, 2893680), (8, 2531970), (9, 2250640), (10, 2025576), (12, 1687980), (14, 1446840), (15, 1350384), (16, 1265985), (18, 1125320), (20, 1012788), (21, 964560), (24, 843990), (28, 723420), (30, 675192), (35, 578736), (36, 562660), (40, 506394), (42, 482280), (45, 450128), (48, 421995), (56, 361710), (60, 337596), (63, 321520), (70, 289368), (72, 281330), (80, 253197), (84, 241140), (90, 225064), (105, 192912), (112, 180855), (120, 168798), (126, 160760), (140, 144684), (144, 140665), (168, 120570), (180, 112532), (210, 96456), (240, 84399), (252, 80380), (280, 72342), (315, 64304), (336, 60285), (360, 56266), (420, 48228), (504, 40190), (560, 36171), (630, 32152), (720, 28133), (840, 24114), (1008, 20095), (1260, 16076), (1680, 12057), (2520, 8038), (4019, 5040)]