21617820

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:94

約数の個数: 288

約数和(自身を含む): 84268800

約数和(自身を除く): 62650980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 27, 28, 30, 35, 36, 38, 42, 43, 45, 49, 54, 57, 60, 63, 70, 76, 84, 86, 90, 95, 98, 105, 108, 114, 126, 129, 133, 135, 140, 147, 171, 172, 180, 189, 190, 196, 210, 215, 228, 245, 252, 258, 266, 270, 285, 294, 301, 315, 342, 378, 380, 387, 399, 420, 430, 441, 490, 513, 516, 532, 540, 570, 588, 602, 630, 645, 665, 684, 735, 756, 774, 798, 817, 855, 860, 882, 903, 931, 945, 980, 1026, 1140, 1161, 1197, 1204, 1260, 1290, 1323, 1330, 1470, 1505, 1548, 1596, 1634, 1710, 1764, 1806, 1862, 1890, 1935, 1995, 2052, 2107, 2205, 2322, 2394, 2451, 2565, 2580, 2646, 2660, 2709, 2793, 2940, 3010, 3268, 3420, 3591, 3612, 3724, 3780, 3870, 3990, 4085, 4214, 4410, 4515, 4644, 4655, 4788, 4902, 5130, 5292, 5418, 5586, 5719, 5805, 5985, 6020, 6321, 6615, 7182, 7353, 7740, 7980, 8127, 8170, 8379, 8428, 8820, 9030, 9310, 9804, 10260, 10535, 10836, 11172, 11438, 11610, 11970, 12255, 12642, 13230, 13545, 13965, 14364, 14706, 16254, 16340, 16758, 17157, 17955, 18060, 18620, 18963, 21070, 22059, 22876, 23220, 23940, 24510, 25137, 25284, 26460, 27090, 27930, 28595, 29412, 31605, 32508, 33516, 34314, 35910, 36765, 37926, 40033, 40635, 41895, 42140, 44118, 49020, 50274, 51471, 54180, 55860, 56889, 57190, 63210, 68628, 71820, 73530, 75852, 80066, 81270, 83790, 85785, 88236, 94815, 100548, 102942, 110295, 113778, 114380, 120099, 125685, 126420, 147060, 154413, 160132, 162540, 167580, 171570, 189630, 200165, 205884, 220590, 227556, 240198, 251370, 257355, 284445, 308826, 343140, 360297, 379260, 400330, 441180, 480396, 502740, 514710, 568890, 600495, 617652, 720594, 772065, 800660, 1029420, 1080891, 1137780, 1200990, 1441188, 1544130, 1801485, 2161782, 2401980, 3088260, 3602970, 4323564, 5404455, 7205940, 10808910, 21617820]

約数ペア:

[(1, 21617820), (2, 10808910), (3, 7205940), (4, 5404455), (5, 4323564), (6, 3602970), (7, 3088260), (9, 2401980), (10, 2161782), (12, 1801485), (14, 1544130), (15, 1441188), (18, 1200990), (19, 1137780), (20, 1080891), (21, 1029420), (27, 800660), (28, 772065), (30, 720594), (35, 617652), (36, 600495), (38, 568890), (42, 514710), (43, 502740), (45, 480396), (49, 441180), (54, 400330), (57, 379260), (60, 360297), (63, 343140), (70, 308826), (76, 284445), (84, 257355), (86, 251370), (90, 240198), (95, 227556), (98, 220590), (105, 205884), (108, 200165), (114, 189630), (126, 171570), (129, 167580), (133, 162540), (135, 160132), (140, 154413), (147, 147060), (171, 126420), (172, 125685), (180, 120099), (189, 114380), (190, 113778), (196, 110295), (210, 102942), (215, 100548), (228, 94815), (245, 88236), (252, 85785), (258, 83790), (266, 81270), (270, 80066), (285, 75852), (294, 73530), (301, 71820), (315, 68628), (342, 63210), (378, 57190), (380, 56889), (387, 55860), (399, 54180), (420, 51471), (430, 50274), (441, 49020), (490, 44118), (513, 42140), (516, 41895), (532, 40635), (540, 40033), (570, 37926), (588, 36765), (602, 35910), (630, 34314), (645, 33516), (665, 32508), (684, 31605), (735, 29412), (756, 28595), (774, 27930), (798, 27090), (817, 26460), (855, 25284), (860, 25137), (882, 24510), (903, 23940), (931, 23220), (945, 22876), (980, 22059), (1026, 21070), (1140, 18963), (1161, 18620), (1197, 18060), (1204, 17955), (1260, 17157), (1290, 16758), (1323, 16340), (1330, 16254), (1470, 14706), (1505, 14364), (1548, 13965), (1596, 13545), (1634, 13230), (1710, 12642), (1764, 12255), (1806, 11970), (1862, 11610), (1890, 11438), (1935, 11172), (1995, 10836), (2052, 10535), (2107, 10260), (2205, 9804), (2322, 9310), (2394, 9030), (2451, 8820), (2565, 8428), (2580, 8379), (2646, 8170), (2660, 8127), (2709, 7980), (2793, 7740), (2940, 7353), (3010, 7182), (3268, 6615), (3420, 6321), (3591, 6020), (3612, 5985), (3724, 5805), (3780, 5719), (3870, 5586), (3990, 5418), (4085, 5292), (4214, 5130), (4410, 4902), (4515, 4788), (4644, 4655)]