21292740

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:199

約数の個数: 192

約数和(自身を含む): 78059520

約数和(自身を除く): 56766780

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 43, 45, 54, 60, 63, 70, 84, 86, 90, 105, 108, 126, 129, 131, 135, 140, 172, 180, 189, 210, 215, 252, 258, 262, 270, 301, 315, 378, 387, 393, 420, 430, 516, 524, 540, 602, 630, 645, 655, 756, 774, 786, 860, 903, 917, 945, 1161, 1179, 1204, 1260, 1290, 1310, 1505, 1548, 1572, 1806, 1834, 1890, 1935, 1965, 2322, 2358, 2580, 2620, 2709, 2751, 3010, 3537, 3612, 3668, 3780, 3870, 3930, 4515, 4585, 4644, 4716, 5418, 5502, 5633, 5805, 5895, 6020, 7074, 7740, 7860, 8127, 8253, 9030, 9170, 10836, 11004, 11266, 11610, 11790, 13545, 13755, 14148, 16254, 16506, 16899, 17685, 18060, 18340, 22532, 23220, 23580, 24759, 27090, 27510, 28165, 32508, 33012, 33798, 35370, 39431, 40635, 41265, 49518, 50697, 54180, 55020, 56330, 67596, 70740, 78862, 81270, 82530, 84495, 99036, 101394, 112660, 118293, 123795, 152091, 157724, 162540, 165060, 168990, 197155, 202788, 236586, 247590, 253485, 304182, 337980, 354879, 394310, 473172, 495180, 506970, 591465, 608364, 709758, 760455, 788620, 1013940, 1064637, 1182930, 1419516, 1520910, 1774395, 2129274, 2365860, 3041820, 3548790, 4258548, 5323185, 7097580, 10646370, 21292740]

約数ペア:

[(1, 21292740), (2, 10646370), (3, 7097580), (4, 5323185), (5, 4258548), (6, 3548790), (7, 3041820), (9, 2365860), (10, 2129274), (12, 1774395), (14, 1520910), (15, 1419516), (18, 1182930), (20, 1064637), (21, 1013940), (27, 788620), (28, 760455), (30, 709758), (35, 608364), (36, 591465), (42, 506970), (43, 495180), (45, 473172), (54, 394310), (60, 354879), (63, 337980), (70, 304182), (84, 253485), (86, 247590), (90, 236586), (105, 202788), (108, 197155), (126, 168990), (129, 165060), (131, 162540), (135, 157724), (140, 152091), (172, 123795), (180, 118293), (189, 112660), (210, 101394), (215, 99036), (252, 84495), (258, 82530), (262, 81270), (270, 78862), (301, 70740), (315, 67596), (378, 56330), (387, 55020), (393, 54180), (420, 50697), (430, 49518), (516, 41265), (524, 40635), (540, 39431), (602, 35370), (630, 33798), (645, 33012), (655, 32508), (756, 28165), (774, 27510), (786, 27090), (860, 24759), (903, 23580), (917, 23220), (945, 22532), (1161, 18340), (1179, 18060), (1204, 17685), (1260, 16899), (1290, 16506), (1310, 16254), (1505, 14148), (1548, 13755), (1572, 13545), (1806, 11790), (1834, 11610), (1890, 11266), (1935, 11004), (1965, 10836), (2322, 9170), (2358, 9030), (2580, 8253), (2620, 8127), (2709, 7860), (2751, 7740), (3010, 7074), (3537, 6020), (3612, 5895), (3668, 5805), (3780, 5633), (3870, 5502), (3930, 5418), (4515, 4716), (4585, 4644)]