21000531888

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37811}}^1$

素因数の和:37880

約数の個数: 240

約数和(自身を含む): 73143532800

約数和(自身を除く): 52143000912

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 19, 21, 24, 28, 29, 36, 38, 42, 48, 56, 57, 58, 63, 72, 76, 84, 87, 112, 114, 116, 126, 133, 144, 152, 168, 171, 174, 203, 228, 232, 252, 261, 266, 304, 336, 342, 348, 399, 406, 456, 464, 504, 522, 532, 551, 609, 684, 696, 798, 812, 912, 1008, 1044, 1064, 1102, 1197, 1218, 1368, 1392, 1596, 1624, 1653, 1827, 2088, 2128, 2204, 2394, 2436, 2736, 3192, 3248, 3306, 3654, 3857, 4176, 4408, 4788, 4872, 4959, 6384, 6612, 7308, 7714, 8816, 9576, 9744, 9918, 11571, 13224, 14616, 15428, 19152, 19836, 23142, 26448, 29232, 30856, 34713, 37811, 39672, 46284, 61712, 69426, 75622, 79344, 92568, 113433, 138852, 151244, 185136, 226866, 264677, 277704, 302488, 340299, 453732, 529354, 555408, 604976, 680598, 718409, 794031, 907464, 1058708, 1096519, 1361196, 1436818, 1588062, 1814928, 2117416, 2155227, 2193038, 2382093, 2722392, 2873636, 3176124, 3289557, 4234832, 4310454, 4386076, 4764186, 5028863, 5444784, 5747272, 6352248, 6465681, 6579114, 7675633, 8620908, 8772152, 9528372, 9868671, 10057726, 11494544, 12704496, 12931362, 13158228, 15086589, 15351266, 17241816, 17544304, 19056744, 19737342, 20115452, 20833861, 23026899, 25862724, 26316456, 30173178, 30702532, 34483632, 38113488, 39474684, 40230904, 41667722, 45259767, 46053798, 51725448, 52632912, 60346356, 61405064, 62501583, 69080697, 78949368, 80461808, 83335444, 90519534, 92107596, 103450896, 120692712, 122810128, 125003166, 138161394, 145837027, 157898736, 166670888, 181039068, 184215192, 187504749, 241385424, 250006332, 276322788, 291674054, 333341776, 362078136, 368430384, 375009498, 437511081, 500012664, 552645576, 583348108, 724156272, 750018996, 875022162, 1000025328, 1105291152, 1166696216, 1312533243, 1500037992, 1750044324, 2333392432, 2625066486, 3000075984, 3500088648, 5250132972, 7000177296, 10500265944, 21000531888]

約数ペア:

[(1, 21000531888), (2, 10500265944), (3, 7000177296), (4, 5250132972), (6, 3500088648), (7, 3000075984), (8, 2625066486), (9, 2333392432), (12, 1750044324), (14, 1500037992), (16, 1312533243), (18, 1166696216), (19, 1105291152), (21, 1000025328), (24, 875022162), (28, 750018996), (29, 724156272), (36, 583348108), (38, 552645576), (42, 500012664), (48, 437511081), (56, 375009498), (57, 368430384), (58, 362078136), (63, 333341776), (72, 291674054), (76, 276322788), (84, 250006332), (87, 241385424), (112, 187504749), (114, 184215192), (116, 181039068), (126, 166670888), (133, 157898736), (144, 145837027), (152, 138161394), (168, 125003166), (171, 122810128), (174, 120692712), (203, 103450896), (228, 92107596), (232, 90519534), (252, 83335444), (261, 80461808), (266, 78949368), (304, 69080697), (336, 62501583), (342, 61405064), (348, 60346356), (399, 52632912), (406, 51725448), (456, 46053798), (464, 45259767), (504, 41667722), (522, 40230904), (532, 39474684), (551, 38113488), (609, 34483632), (684, 30702532), (696, 30173178), (798, 26316456), (812, 25862724), (912, 23026899), (1008, 20833861), (1044, 20115452), (1064, 19737342), (1102, 19056744), (1197, 17544304), (1218, 17241816), (1368, 15351266), (1392, 15086589), (1596, 13158228), (1624, 12931362), (1653, 12704496), (1827, 11494544), (2088, 10057726), (2128, 9868671), (2204, 9528372), (2394, 8772152), (2436, 8620908), (2736, 7675633), (3192, 6579114), (3248, 6465681), (3306, 6352248), (3654, 5747272), (3857, 5444784), (4176, 5028863), (4408, 4764186), (4788, 4386076), (4872, 4310454), (4959, 4234832), (6384, 3289557), (6612, 3176124), (7308, 2873636), (7714, 2722392), (8816, 2382093), (9576, 2193038), (9744, 2155227), (9918, 2117416), (11571, 1814928), (13224, 1588062), (14616, 1436818), (15428, 1361196), (19152, 1096519), (19836, 1058708), (23142, 907464), (26448, 794031), (29232, 718409), (30856, 680598), (34713, 604976), (37811, 555408), (39672, 529354), (46284, 453732), (61712, 340299), (69426, 302488), (75622, 277704), (79344, 264677), (92568, 226866), (113433, 185136), (138852, 151244)]