21000497004

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{9479}}^1$

素因数の和:9628

約数の個数: 144

約数和(自身を含む): 57972096000

約数和(自身を除く): 36971598996

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 41, 57, 76, 79, 82, 114, 123, 158, 164, 171, 228, 237, 246, 316, 342, 369, 474, 492, 684, 711, 738, 779, 948, 1422, 1476, 1501, 1558, 2337, 2844, 3002, 3116, 3239, 4503, 4674, 6004, 6478, 7011, 9006, 9348, 9479, 9717, 12956, 13509, 14022, 18012, 18958, 19434, 27018, 28044, 28437, 29151, 37916, 38868, 54036, 56874, 58302, 61541, 85311, 113748, 116604, 123082, 170622, 180101, 184623, 246164, 341244, 360202, 369246, 388639, 540303, 553869, 720404, 738492, 748841, 777278, 1080606, 1107738, 1165917, 1497682, 1554556, 1620909, 2161212, 2215476, 2246523, 2331834, 2995364, 3241818, 3497751, 4493046, 4663668, 6483636, 6739569, 6995502, 7384141, 8986092, 13479138, 13991004, 14227979, 14768282, 22152423, 26958276, 28455958, 29536564, 30702481, 42683937, 44304846, 56911916, 61404962, 66457269, 85367874, 88609692, 92107443, 122809924, 128051811, 132914538, 170735748, 184214886, 256103622, 265829076, 276322329, 368429772, 512207244, 552644658, 583347139, 1105289316, 1166694278, 1750041417, 2333388556, 3500082834, 5250124251, 7000165668, 10500248502, 21000497004]

約数ペア:

[(1, 21000497004), (2, 10500248502), (3, 7000165668), (4, 5250124251), (6, 3500082834), (9, 2333388556), (12, 1750041417), (18, 1166694278), (19, 1105289316), (36, 583347139), (38, 552644658), (41, 512207244), (57, 368429772), (76, 276322329), (79, 265829076), (82, 256103622), (114, 184214886), (123, 170735748), (158, 132914538), (164, 128051811), (171, 122809924), (228, 92107443), (237, 88609692), (246, 85367874), (316, 66457269), (342, 61404962), (369, 56911916), (474, 44304846), (492, 42683937), (684, 30702481), (711, 29536564), (738, 28455958), (779, 26958276), (948, 22152423), (1422, 14768282), (1476, 14227979), (1501, 13991004), (1558, 13479138), (2337, 8986092), (2844, 7384141), (3002, 6995502), (3116, 6739569), (3239, 6483636), (4503, 4663668), (4674, 4493046), (6004, 3497751), (6478, 3241818), (7011, 2995364), (9006, 2331834), (9348, 2246523), (9479, 2215476), (9717, 2161212), (12956, 1620909), (13509, 1554556), (14022, 1497682), (18012, 1165917), (18958, 1107738), (19434, 1080606), (27018, 777278), (28044, 748841), (28437, 738492), (29151, 720404), (37916, 553869), (38868, 540303), (54036, 388639), (56874, 369246), (58302, 360202), (61541, 341244), (85311, 246164), (113748, 184623), (116604, 180101), (123082, 170622)]