20987101320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{347}}^1\times {\mathrm{647}}^1$

素因数の和:1068

約数の個数: 256

約数和(自身を含む): 68192409600

約数和(自身を除く): 47205308280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 41, 57, 60, 76, 82, 95, 114, 120, 123, 152, 164, 190, 205, 228, 246, 285, 328, 347, 380, 410, 456, 492, 570, 615, 647, 694, 760, 779, 820, 984, 1041, 1140, 1230, 1294, 1388, 1558, 1640, 1735, 1941, 2082, 2280, 2337, 2460, 2588, 2776, 3116, 3235, 3470, 3882, 3895, 4164, 4674, 4920, 5176, 5205, 6232, 6470, 6593, 6940, 7764, 7790, 8328, 9348, 9705, 10410, 11685, 12293, 12940, 13186, 13880, 14227, 15528, 15580, 18696, 19410, 19779, 20820, 23370, 24586, 25880, 26372, 26527, 28454, 31160, 32965, 36879, 38820, 39558, 41640, 42681, 46740, 49172, 52744, 53054, 56908, 61465, 65930, 71135, 73758, 77640, 79116, 79581, 85362, 93480, 98344, 98895, 106108, 113816, 122930, 131860, 132635, 142270, 147516, 158232, 159162, 170724, 184395, 197790, 212216, 213405, 224509, 245860, 263720, 265270, 270313, 284540, 295032, 318324, 341448, 368790, 395580, 397905, 426810, 449018, 491720, 504013, 530540, 540626, 569080, 636648, 673527, 737580, 791160, 795810, 810939, 853620, 898036, 1008026, 1061080, 1081252, 1122545, 1347054, 1351565, 1475160, 1512039, 1591620, 1621878, 1707240, 1796072, 2016052, 2162504, 2245090, 2520065, 2694108, 2703130, 3024078, 3183240, 3243756, 3367635, 4032104, 4054695, 4265671, 4490180, 5040130, 5388216, 5406260, 6048156, 6487512, 6735270, 7560195, 8109390, 8531342, 8980360, 9204869, 10080260, 10812520, 12096312, 12797013, 13470540, 15120390, 16218780, 17062684, 18409738, 20160520, 21328355, 25594026, 26941080, 27614607, 30240780, 32437560, 34125368, 36819476, 42656710, 46024345, 51188052, 55229214, 60481560, 63985065, 73638952, 85313420, 92048690, 102376104, 110458428, 127970130, 138073035, 170626840, 174892511, 184097380, 220916856, 255940260, 276146070, 349785022, 368194760, 511880520, 524677533, 552292140, 699570044, 874462555, 1049355066, 1104584280, 1399140088, 1748925110, 2098710132, 2623387665, 3497850220, 4197420264, 5246775330, 6995700440, 10493550660, 20987101320]

約数ペア:

[(1, 20987101320), (2, 10493550660), (3, 6995700440), (4, 5246775330), (5, 4197420264), (6, 3497850220), (8, 2623387665), (10, 2098710132), (12, 1748925110), (15, 1399140088), (19, 1104584280), (20, 1049355066), (24, 874462555), (30, 699570044), (38, 552292140), (40, 524677533), (41, 511880520), (57, 368194760), (60, 349785022), (76, 276146070), (82, 255940260), (95, 220916856), (114, 184097380), (120, 174892511), (123, 170626840), (152, 138073035), (164, 127970130), (190, 110458428), (205, 102376104), (228, 92048690), (246, 85313420), (285, 73638952), (328, 63985065), (347, 60481560), (380, 55229214), (410, 51188052), (456, 46024345), (492, 42656710), (570, 36819476), (615, 34125368), (647, 32437560), (694, 30240780), (760, 27614607), (779, 26941080), (820, 25594026), (984, 21328355), (1041, 20160520), (1140, 18409738), (1230, 17062684), (1294, 16218780), (1388, 15120390), (1558, 13470540), (1640, 12797013), (1735, 12096312), (1941, 10812520), (2082, 10080260), (2280, 9204869), (2337, 8980360), (2460, 8531342), (2588, 8109390), (2776, 7560195), (3116, 6735270), (3235, 6487512), (3470, 6048156), (3882, 5406260), (3895, 5388216), (4164, 5040130), (4674, 4490180), (4920, 4265671), (5176, 4054695), (5205, 4032104), (6232, 3367635), (6470, 3243756), (6593, 3183240), (6940, 3024078), (7764, 2703130), (7790, 2694108), (8328, 2520065), (9348, 2245090), (9705, 2162504), (10410, 2016052), (11685, 1796072), (12293, 1707240), (12940, 1621878), (13186, 1591620), (13880, 1512039), (14227, 1475160), (15528, 1351565), (15580, 1347054), (18696, 1122545), (19410, 1081252), (19779, 1061080), (20820, 1008026), (23370, 898036), (24586, 853620), (25880, 810939), (26372, 795810), (26527, 791160), (28454, 737580), (31160, 673527), (32965, 636648), (36879, 569080), (38820, 540626), (39558, 530540), (41640, 504013), (42681, 491720), (46740, 449018), (49172, 426810), (52744, 397905), (53054, 395580), (56908, 368790), (61465, 341448), (65930, 318324), (71135, 295032), (73758, 284540), (77640, 270313), (79116, 265270), (79581, 263720), (85362, 245860), (93480, 224509), (98344, 213405), (98895, 212216), (106108, 197790), (113816, 184395), (122930, 170724), (131860, 159162), (132635, 158232), (142270, 147516)]