21888720

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:170

約数の個数: 240

約数和(自身を含む): 86815872

約数和(自身を除く): 64927152

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, 43, 45, 48, 56, 60, 63, 70, 72, 80, 84, 86, 90, 101, 105, 112, 120, 126, 129, 140, 144, 168, 172, 180, 202, 210, 215, 240, 252, 258, 280, 301, 303, 315, 336, 344, 360, 387, 404, 420, 430, 504, 505, 516, 560, 602, 606, 630, 645, 688, 707, 720, 774, 808, 840, 860, 903, 909, 1008, 1010, 1032, 1204, 1212, 1260, 1290, 1414, 1505, 1515, 1548, 1616, 1680, 1720, 1806, 1818, 1935, 2020, 2064, 2121, 2408, 2424, 2520, 2580, 2709, 2828, 3010, 3030, 3096, 3440, 3535, 3612, 3636, 3870, 4040, 4242, 4343, 4515, 4545, 4816, 4848, 5040, 5160, 5418, 5656, 6020, 6060, 6192, 6363, 7070, 7224, 7272, 7740, 8080, 8484, 8686, 9030, 9090, 10320, 10605, 10836, 11312, 12040, 12120, 12726, 13029, 13545, 14140, 14448, 14544, 15480, 16968, 17372, 18060, 18180, 21210, 21672, 21715, 24080, 24240, 25452, 26058, 27090, 28280, 30401, 30960, 31815, 33936, 34744, 36120, 36360, 39087, 42420, 43344, 43430, 50904, 52116, 54180, 56560, 60802, 63630, 65145, 69488, 72240, 72720, 78174, 84840, 86860, 91203, 101808, 104232, 108360, 121604, 127260, 130290, 152005, 156348, 169680, 173720, 182406, 195435, 208464, 216720, 243208, 254520, 260580, 273609, 304010, 312696, 347440, 364812, 390870, 456015, 486416, 509040, 521160, 547218, 608020, 625392, 729624, 781740, 912030, 1042320, 1094436, 1216040, 1368045, 1459248, 1563480, 1824060, 2188872, 2432080, 2736090, 3126960, 3648120, 4377744, 5472180, 7296240, 10944360, 21888720]

約数ペア:

[(1, 21888720), (2, 10944360), (3, 7296240), (4, 5472180), (5, 4377744), (6, 3648120), (7, 3126960), (8, 2736090), (9, 2432080), (10, 2188872), (12, 1824060), (14, 1563480), (15, 1459248), (16, 1368045), (18, 1216040), (20, 1094436), (21, 1042320), (24, 912030), (28, 781740), (30, 729624), (35, 625392), (36, 608020), (40, 547218), (42, 521160), (43, 509040), (45, 486416), (48, 456015), (56, 390870), (60, 364812), (63, 347440), (70, 312696), (72, 304010), (80, 273609), (84, 260580), (86, 254520), (90, 243208), (101, 216720), (105, 208464), (112, 195435), (120, 182406), (126, 173720), (129, 169680), (140, 156348), (144, 152005), (168, 130290), (172, 127260), (180, 121604), (202, 108360), (210, 104232), (215, 101808), (240, 91203), (252, 86860), (258, 84840), (280, 78174), (301, 72720), (303, 72240), (315, 69488), (336, 65145), (344, 63630), (360, 60802), (387, 56560), (404, 54180), (420, 52116), (430, 50904), (504, 43430), (505, 43344), (516, 42420), (560, 39087), (602, 36360), (606, 36120), (630, 34744), (645, 33936), (688, 31815), (707, 30960), (720, 30401), (774, 28280), (808, 27090), (840, 26058), (860, 25452), (903, 24240), (909, 24080), (1008, 21715), (1010, 21672), (1032, 21210), (1204, 18180), (1212, 18060), (1260, 17372), (1290, 16968), (1414, 15480), (1505, 14544), (1515, 14448), (1548, 14140), (1616, 13545), (1680, 13029), (1720, 12726), (1806, 12120), (1818, 12040), (1935, 11312), (2020, 10836), (2064, 10605), (2121, 10320), (2408, 9090), (2424, 9030), (2520, 8686), (2580, 8484), (2709, 8080), (2828, 7740), (3010, 7272), (3030, 7224), (3096, 7070), (3440, 6363), (3535, 6192), (3612, 6060), (3636, 6020), (3870, 5656), (4040, 5418), (4242, 5160), (4343, 5040), (4515, 4848), (4545, 4816)]