20317500

素因数分解:

$2^2\times 3^3\times 5^4\times 7^1\times {\mathrm{43}}^1$

素因数の和:83

約数の個数: 240

約数和(自身を含む): 76975360

約数和(自身を除く): 56657860

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 27, 28, 30, 35, 36, 42, 43, 45, 50, 54, 60, 63, 70, 75, 84, 86, 90, 100, 105, 108, 125, 126, 129, 135, 140, 150, 172, 175, 180, 189, 210, 215, 225, 250, 252, 258, 270, 300, 301, 315, 350, 375, 378, 387, 420, 430, 450, 500, 516, 525, 540, 602, 625, 630, 645, 675, 700, 750, 756, 774, 860, 875, 900, 903, 945, 1050, 1075, 1125, 1161, 1204, 1250, 1260, 1290, 1350, 1500, 1505, 1548, 1575, 1750, 1806, 1875, 1890, 1935, 2100, 2150, 2250, 2322, 2500, 2580, 2625, 2700, 2709, 3010, 3150, 3225, 3375, 3500, 3612, 3750, 3780, 3870, 4300, 4375, 4500, 4515, 4644, 4725, 5250, 5375, 5418, 5625, 5805, 6020, 6300, 6450, 6750, 7500, 7525, 7740, 7875, 8127, 8750, 9030, 9450, 9675, 10500, 10750, 10836, 11250, 11610, 12900, 13125, 13500, 13545, 15050, 15750, 16125, 16254, 16875, 17500, 18060, 18900, 19350, 21500, 22500, 22575, 23220, 23625, 26250, 26875, 27090, 29025, 30100, 31500, 32250, 32508, 33750, 37625, 38700, 39375, 40635, 45150, 47250, 48375, 52500, 53750, 54180, 58050, 64500, 67500, 67725, 75250, 78750, 80625, 81270, 90300, 94500, 96750, 107500, 112875, 116100, 118125, 135450, 145125, 150500, 157500, 161250, 162540, 188125, 193500, 203175, 225750, 236250, 241875, 270900, 290250, 322500, 338625, 376250, 406350, 451500, 472500, 483750, 564375, 580500, 677250, 725625, 752500, 812700, 967500, 1015875, 1128750, 1354500, 1451250, 1693125, 2031750, 2257500, 2902500, 3386250, 4063500, 5079375, 6772500, 10158750, 20317500]

約数ペア:

[(1, 20317500), (2, 10158750), (3, 6772500), (4, 5079375), (5, 4063500), (6, 3386250), (7, 2902500), (9, 2257500), (10, 2031750), (12, 1693125), (14, 1451250), (15, 1354500), (18, 1128750), (20, 1015875), (21, 967500), (25, 812700), (27, 752500), (28, 725625), (30, 677250), (35, 580500), (36, 564375), (42, 483750), (43, 472500), (45, 451500), (50, 406350), (54, 376250), (60, 338625), (63, 322500), (70, 290250), (75, 270900), (84, 241875), (86, 236250), (90, 225750), (100, 203175), (105, 193500), (108, 188125), (125, 162540), (126, 161250), (129, 157500), (135, 150500), (140, 145125), (150, 135450), (172, 118125), (175, 116100), (180, 112875), (189, 107500), (210, 96750), (215, 94500), (225, 90300), (250, 81270), (252, 80625), (258, 78750), (270, 75250), (300, 67725), (301, 67500), (315, 64500), (350, 58050), (375, 54180), (378, 53750), (387, 52500), (420, 48375), (430, 47250), (450, 45150), (500, 40635), (516, 39375), (525, 38700), (540, 37625), (602, 33750), (625, 32508), (630, 32250), (645, 31500), (675, 30100), (700, 29025), (750, 27090), (756, 26875), (774, 26250), (860, 23625), (875, 23220), (900, 22575), (903, 22500), (945, 21500), (1050, 19350), (1075, 18900), (1125, 18060), (1161, 17500), (1204, 16875), (1250, 16254), (1260, 16125), (1290, 15750), (1350, 15050), (1500, 13545), (1505, 13500), (1548, 13125), (1575, 12900), (1750, 11610), (1806, 11250), (1875, 10836), (1890, 10750), (1935, 10500), (2100, 9675), (2150, 9450), (2250, 9030), (2322, 8750), (2500, 8127), (2580, 7875), (2625, 7740), (2700, 7525), (2709, 7500), (3010, 6750), (3150, 6450), (3225, 6300), (3375, 6020), (3500, 5805), (3612, 5625), (3750, 5418), (3780, 5375), (3870, 5250), (4300, 4725), (4375, 4644), (4500, 4515)]