20806380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^3\times {\mathrm{337}}^1$

素因数の和:373

約数の個数: 144

約数和(自身を含む): 73819200

約数和(自身を除く): 53012820

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 337, 343, 420, 441, 490, 588, 630, 674, 686, 735, 882, 980, 1011, 1029, 1260, 1348, 1372, 1470, 1685, 1715, 1764, 2022, 2058, 2205, 2359, 2940, 3033, 3087, 3370, 3430, 4044, 4116, 4410, 4718, 5055, 5145, 6066, 6174, 6740, 6860, 7077, 8820, 9436, 10110, 10290, 11795, 12132, 12348, 14154, 15165, 15435, 16513, 20220, 20580, 21231, 23590, 28308, 30330, 30870, 33026, 35385, 42462, 47180, 49539, 60660, 61740, 66052, 70770, 82565, 84924, 99078, 106155, 115591, 141540, 148617, 165130, 198156, 212310, 231182, 247695, 297234, 330260, 346773, 424620, 462364, 495390, 577955, 594468, 693546, 743085, 990780, 1040319, 1155910, 1387092, 1486170, 1733865, 2080638, 2311820, 2972340, 3467730, 4161276, 5201595, 6935460, 10403190, 20806380]

約数ペア:

[(1, 20806380), (2, 10403190), (3, 6935460), (4, 5201595), (5, 4161276), (6, 3467730), (7, 2972340), (9, 2311820), (10, 2080638), (12, 1733865), (14, 1486170), (15, 1387092), (18, 1155910), (20, 1040319), (21, 990780), (28, 743085), (30, 693546), (35, 594468), (36, 577955), (42, 495390), (45, 462364), (49, 424620), (60, 346773), (63, 330260), (70, 297234), (84, 247695), (90, 231182), (98, 212310), (105, 198156), (126, 165130), (140, 148617), (147, 141540), (180, 115591), (196, 106155), (210, 99078), (245, 84924), (252, 82565), (294, 70770), (315, 66052), (337, 61740), (343, 60660), (420, 49539), (441, 47180), (490, 42462), (588, 35385), (630, 33026), (674, 30870), (686, 30330), (735, 28308), (882, 23590), (980, 21231), (1011, 20580), (1029, 20220), (1260, 16513), (1348, 15435), (1372, 15165), (1470, 14154), (1685, 12348), (1715, 12132), (1764, 11795), (2022, 10290), (2058, 10110), (2205, 9436), (2359, 8820), (2940, 7077), (3033, 6860), (3087, 6740), (3370, 6174), (3430, 6066), (4044, 5145), (4116, 5055), (4410, 4718)]