21233520

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{383}}^1$

素因数の和:420

約数の個数: 240

約数和(自身を含む): 89137152

約数和(自身を除く): 67903632

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 18, 20, 21, 22, 24, 28, 30, 33, 35, 36, 40, 42, 44, 45, 48, 55, 56, 60, 63, 66, 70, 72, 77, 80, 84, 88, 90, 99, 105, 110, 112, 120, 126, 132, 140, 144, 154, 165, 168, 176, 180, 198, 210, 220, 231, 240, 252, 264, 280, 308, 315, 330, 336, 360, 383, 385, 396, 420, 440, 462, 495, 504, 528, 560, 616, 630, 660, 693, 720, 766, 770, 792, 840, 880, 924, 990, 1008, 1149, 1155, 1232, 1260, 1320, 1386, 1532, 1540, 1584, 1680, 1848, 1915, 1980, 2298, 2310, 2520, 2640, 2681, 2772, 3064, 3080, 3447, 3465, 3696, 3830, 3960, 4213, 4596, 4620, 5040, 5362, 5544, 5745, 6128, 6160, 6894, 6930, 7660, 7920, 8043, 8426, 9192, 9240, 10724, 11088, 11490, 12639, 13405, 13788, 13860, 15320, 16086, 16852, 17235, 18384, 18480, 21065, 21448, 22980, 24129, 25278, 26810, 27576, 27720, 29491, 30640, 32172, 33704, 34470, 37917, 40215, 42130, 42896, 45960, 48258, 50556, 53620, 55152, 55440, 58982, 63195, 64344, 67408, 68940, 75834, 80430, 84260, 88473, 91920, 96516, 101112, 107240, 117964, 120645, 126390, 128688, 137880, 147455, 151668, 160860, 168520, 176946, 189585, 193032, 202224, 214480, 235928, 241290, 252780, 265419, 275760, 294910, 303336, 321720, 337040, 353892, 379170, 386064, 442365, 471856, 482580, 505560, 530838, 589820, 606672, 643440, 707784, 758340, 884730, 965160, 1011120, 1061676, 1179640, 1327095, 1415568, 1516680, 1769460, 1930320, 2123352, 2359280, 2654190, 3033360, 3538920, 4246704, 5308380, 7077840, 10616760, 21233520]

約数ペア:

[(1, 21233520), (2, 10616760), (3, 7077840), (4, 5308380), (5, 4246704), (6, 3538920), (7, 3033360), (8, 2654190), (9, 2359280), (10, 2123352), (11, 1930320), (12, 1769460), (14, 1516680), (15, 1415568), (16, 1327095), (18, 1179640), (20, 1061676), (21, 1011120), (22, 965160), (24, 884730), (28, 758340), (30, 707784), (33, 643440), (35, 606672), (36, 589820), (40, 530838), (42, 505560), (44, 482580), (45, 471856), (48, 442365), (55, 386064), (56, 379170), (60, 353892), (63, 337040), (66, 321720), (70, 303336), (72, 294910), (77, 275760), (80, 265419), (84, 252780), (88, 241290), (90, 235928), (99, 214480), (105, 202224), (110, 193032), (112, 189585), (120, 176946), (126, 168520), (132, 160860), (140, 151668), (144, 147455), (154, 137880), (165, 128688), (168, 126390), (176, 120645), (180, 117964), (198, 107240), (210, 101112), (220, 96516), (231, 91920), (240, 88473), (252, 84260), (264, 80430), (280, 75834), (308, 68940), (315, 67408), (330, 64344), (336, 63195), (360, 58982), (383, 55440), (385, 55152), (396, 53620), (420, 50556), (440, 48258), (462, 45960), (495, 42896), (504, 42130), (528, 40215), (560, 37917), (616, 34470), (630, 33704), (660, 32172), (693, 30640), (720, 29491), (766, 27720), (770, 27576), (792, 26810), (840, 25278), (880, 24129), (924, 22980), (990, 21448), (1008, 21065), (1149, 18480), (1155, 18384), (1232, 17235), (1260, 16852), (1320, 16086), (1386, 15320), (1532, 13860), (1540, 13788), (1584, 13405), (1680, 12639), (1848, 11490), (1915, 11088), (1980, 10724), (2298, 9240), (2310, 9192), (2520, 8426), (2640, 8043), (2681, 7920), (2772, 7660), (3064, 6930), (3080, 6894), (3447, 6160), (3465, 6128), (3696, 5745), (3830, 5544), (3960, 5362), (4213, 5040), (4596, 4620)]