71281980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:209

約数の個数: 288

約数和(自身を含む): 278853120

約数和(自身を除く): 207571140

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 33, 35, 36, 37, 42, 44, 45, 55, 60, 63, 66, 70, 74, 77, 84, 90, 99, 105, 110, 111, 126, 132, 139, 140, 148, 154, 165, 180, 185, 198, 210, 220, 222, 231, 252, 259, 278, 308, 315, 330, 333, 370, 385, 396, 407, 417, 420, 444, 462, 495, 518, 555, 556, 630, 660, 666, 693, 695, 740, 770, 777, 814, 834, 924, 973, 990, 1036, 1110, 1155, 1221, 1251, 1260, 1295, 1332, 1386, 1390, 1529, 1540, 1554, 1628, 1665, 1668, 1946, 1980, 2035, 2085, 2220, 2310, 2331, 2442, 2502, 2590, 2772, 2780, 2849, 2919, 3058, 3108, 3330, 3465, 3663, 3885, 3892, 4070, 4170, 4587, 4620, 4662, 4865, 4884, 5004, 5143, 5180, 5698, 5838, 6105, 6116, 6255, 6660, 6930, 7326, 7645, 7770, 8140, 8340, 8547, 8757, 9174, 9324, 9730, 10286, 10703, 11396, 11655, 11676, 12210, 12510, 13761, 13860, 14245, 14595, 14652, 15290, 15429, 15540, 17094, 17514, 18315, 18348, 19460, 20572, 21406, 22935, 23310, 24420, 25020, 25641, 25715, 27522, 28490, 29190, 30580, 30858, 32109, 34188, 35028, 36001, 36630, 42735, 42812, 43785, 45870, 46287, 46620, 51282, 51430, 53515, 55044, 56573, 56980, 58380, 61716, 64218, 68805, 72002, 73260, 77145, 85470, 87570, 91740, 92574, 96327, 102564, 102860, 107030, 108003, 113146, 128205, 128436, 137610, 144004, 154290, 160545, 169719, 170940, 175140, 180005, 185148, 192654, 214060, 216006, 226292, 231435, 256410, 275220, 282865, 308580, 321090, 324009, 339438, 360010, 385308, 396011, 432012, 462870, 481635, 509157, 512820, 540015, 565730, 642180, 648018, 678876, 720020, 792022, 848595, 925740, 963270, 1018314, 1080030, 1131460, 1188033, 1296036, 1584044, 1620045, 1697190, 1926540, 1980055, 2036628, 2160060, 2376066, 2545785, 3240090, 3394380, 3564099, 3960110, 4752132, 5091570, 5940165, 6480180, 7128198, 7920220, 10183140, 11880330, 14256396, 17820495, 23760660, 35640990, 71281980]

約数ペア:

[(1, 71281980), (2, 35640990), (3, 23760660), (4, 17820495), (5, 14256396), (6, 11880330), (7, 10183140), (9, 7920220), (10, 7128198), (11, 6480180), (12, 5940165), (14, 5091570), (15, 4752132), (18, 3960110), (20, 3564099), (21, 3394380), (22, 3240090), (28, 2545785), (30, 2376066), (33, 2160060), (35, 2036628), (36, 1980055), (37, 1926540), (42, 1697190), (44, 1620045), (45, 1584044), (55, 1296036), (60, 1188033), (63, 1131460), (66, 1080030), (70, 1018314), (74, 963270), (77, 925740), (84, 848595), (90, 792022), (99, 720020), (105, 678876), (110, 648018), (111, 642180), (126, 565730), (132, 540015), (139, 512820), (140, 509157), (148, 481635), (154, 462870), (165, 432012), (180, 396011), (185, 385308), (198, 360010), (210, 339438), (220, 324009), (222, 321090), (231, 308580), (252, 282865), (259, 275220), (278, 256410), (308, 231435), (315, 226292), (330, 216006), (333, 214060), (370, 192654), (385, 185148), (396, 180005), (407, 175140), (417, 170940), (420, 169719), (444, 160545), (462, 154290), (495, 144004), (518, 137610), (555, 128436), (556, 128205), (630, 113146), (660, 108003), (666, 107030), (693, 102860), (695, 102564), (740, 96327), (770, 92574), (777, 91740), (814, 87570), (834, 85470), (924, 77145), (973, 73260), (990, 72002), (1036, 68805), (1110, 64218), (1155, 61716), (1221, 58380), (1251, 56980), (1260, 56573), (1295, 55044), (1332, 53515), (1386, 51430), (1390, 51282), (1529, 46620), (1540, 46287), (1554, 45870), (1628, 43785), (1665, 42812), (1668, 42735), (1946, 36630), (1980, 36001), (2035, 35028), (2085, 34188), (2220, 32109), (2310, 30858), (2331, 30580), (2442, 29190), (2502, 28490), (2590, 27522), (2772, 25715), (2780, 25641), (2849, 25020), (2919, 24420), (3058, 23310), (3108, 22935), (3330, 21406), (3465, 20572), (3663, 19460), (3885, 18348), (3892, 18315), (4070, 17514), (4170, 17094), (4587, 15540), (4620, 15429), (4662, 15290), (4865, 14652), (4884, 14595), (5004, 14245), (5143, 13860), (5180, 13761), (5698, 12510), (5838, 12210), (6105, 11676), (6116, 11655), (6255, 11396), (6660, 10703), (6930, 10286), (7326, 9730), (7645, 9324), (7770, 9174), (8140, 8757), (8340, 8547)]