20970180

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1$

素因数の和:139

約数の個数: 288

約数和(自身を含む): 84913920

約数和(自身を除く): 63943740

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 17, 18, 20, 21, 22, 28, 30, 33, 34, 35, 36, 42, 44, 45, 51, 55, 60, 63, 66, 68, 70, 77, 84, 85, 89, 90, 99, 102, 105, 110, 119, 126, 132, 140, 153, 154, 165, 170, 178, 180, 187, 198, 204, 210, 220, 231, 238, 252, 255, 267, 306, 308, 315, 330, 340, 356, 357, 374, 385, 396, 420, 445, 462, 476, 495, 510, 534, 561, 595, 612, 623, 630, 660, 693, 714, 748, 765, 770, 801, 890, 924, 935, 979, 990, 1020, 1068, 1071, 1122, 1155, 1190, 1246, 1260, 1309, 1335, 1386, 1428, 1513, 1530, 1540, 1602, 1683, 1780, 1785, 1869, 1870, 1958, 1980, 2142, 2244, 2310, 2380, 2492, 2618, 2670, 2772, 2805, 2937, 3026, 3060, 3115, 3204, 3366, 3465, 3570, 3738, 3740, 3916, 3927, 4005, 4284, 4539, 4620, 4895, 5236, 5340, 5355, 5607, 5610, 5874, 6052, 6230, 6545, 6732, 6853, 6930, 7140, 7476, 7565, 7854, 8010, 8415, 8811, 9078, 9345, 9790, 10591, 10710, 11214, 11220, 11748, 11781, 12460, 13090, 13617, 13706, 13860, 14685, 15130, 15708, 16020, 16643, 16830, 17622, 18156, 18690, 19580, 19635, 20559, 21182, 21420, 22428, 22695, 23562, 26180, 27234, 27412, 28035, 29370, 30260, 31773, 33286, 33660, 34265, 35244, 37380, 39270, 41118, 42364, 44055, 45390, 47124, 49929, 52955, 54468, 56070, 58740, 58905, 61677, 63546, 66572, 68085, 68530, 78540, 82236, 83215, 88110, 90780, 95319, 99858, 102795, 105910, 112140, 116501, 117810, 123354, 127092, 136170, 137060, 149787, 158865, 166430, 176220, 190638, 199716, 205590, 211820, 233002, 235620, 246708, 249645, 272340, 299574, 308385, 317730, 332860, 349503, 381276, 411180, 466004, 476595, 499290, 582505, 599148, 616770, 635460, 699006, 748935, 953190, 998580, 1048509, 1165010, 1233540, 1398012, 1497870, 1747515, 1906380, 2097018, 2330020, 2995740, 3495030, 4194036, 5242545, 6990060, 10485090, 20970180]

約数ペア:

[(1, 20970180), (2, 10485090), (3, 6990060), (4, 5242545), (5, 4194036), (6, 3495030), (7, 2995740), (9, 2330020), (10, 2097018), (11, 1906380), (12, 1747515), (14, 1497870), (15, 1398012), (17, 1233540), (18, 1165010), (20, 1048509), (21, 998580), (22, 953190), (28, 748935), (30, 699006), (33, 635460), (34, 616770), (35, 599148), (36, 582505), (42, 499290), (44, 476595), (45, 466004), (51, 411180), (55, 381276), (60, 349503), (63, 332860), (66, 317730), (68, 308385), (70, 299574), (77, 272340), (84, 249645), (85, 246708), (89, 235620), (90, 233002), (99, 211820), (102, 205590), (105, 199716), (110, 190638), (119, 176220), (126, 166430), (132, 158865), (140, 149787), (153, 137060), (154, 136170), (165, 127092), (170, 123354), (178, 117810), (180, 116501), (187, 112140), (198, 105910), (204, 102795), (210, 99858), (220, 95319), (231, 90780), (238, 88110), (252, 83215), (255, 82236), (267, 78540), (306, 68530), (308, 68085), (315, 66572), (330, 63546), (340, 61677), (356, 58905), (357, 58740), (374, 56070), (385, 54468), (396, 52955), (420, 49929), (445, 47124), (462, 45390), (476, 44055), (495, 42364), (510, 41118), (534, 39270), (561, 37380), (595, 35244), (612, 34265), (623, 33660), (630, 33286), (660, 31773), (693, 30260), (714, 29370), (748, 28035), (765, 27412), (770, 27234), (801, 26180), (890, 23562), (924, 22695), (935, 22428), (979, 21420), (990, 21182), (1020, 20559), (1068, 19635), (1071, 19580), (1122, 18690), (1155, 18156), (1190, 17622), (1246, 16830), (1260, 16643), (1309, 16020), (1335, 15708), (1386, 15130), (1428, 14685), (1513, 13860), (1530, 13706), (1540, 13617), (1602, 13090), (1683, 12460), (1780, 11781), (1785, 11748), (1869, 11220), (1870, 11214), (1958, 10710), (1980, 10591), (2142, 9790), (2244, 9345), (2310, 9078), (2380, 8811), (2492, 8415), (2618, 8010), (2670, 7854), (2772, 7565), (2805, 7476), (2937, 7140), (3026, 6930), (3060, 6853), (3115, 6732), (3204, 6545), (3366, 6230), (3465, 6052), (3570, 5874), (3738, 5610), (3740, 5607), (3916, 5355), (3927, 5340), (4005, 5236), (4284, 4895), (4539, 4620)]