21186984

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:227

約数の個数: 128

約数和(自身を含む): 66528000

約数和(自身を除く): 45341016

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 39, 42, 52, 56, 78, 84, 89, 91, 104, 109, 156, 168, 178, 182, 218, 267, 273, 312, 327, 356, 364, 436, 534, 546, 623, 654, 712, 728, 763, 872, 1068, 1092, 1157, 1246, 1308, 1417, 1526, 1869, 2136, 2184, 2289, 2314, 2492, 2616, 2834, 3052, 3471, 3738, 4251, 4578, 4628, 4984, 5668, 6104, 6942, 7476, 8099, 8502, 9156, 9256, 9701, 9919, 11336, 13884, 14952, 16198, 17004, 18312, 19402, 19838, 24297, 27768, 29103, 29757, 32396, 34008, 38804, 39676, 48594, 58206, 59514, 64792, 67907, 77608, 79352, 97188, 116412, 119028, 126113, 135814, 194376, 203721, 232824, 238056, 252226, 271628, 378339, 407442, 504452, 543256, 756678, 814884, 882791, 1008904, 1513356, 1629768, 1765582, 2648373, 3026712, 3531164, 5296746, 7062328, 10593492, 21186984]

約数ペア:

[(1, 21186984), (2, 10593492), (3, 7062328), (4, 5296746), (6, 3531164), (7, 3026712), (8, 2648373), (12, 1765582), (13, 1629768), (14, 1513356), (21, 1008904), (24, 882791), (26, 814884), (28, 756678), (39, 543256), (42, 504452), (52, 407442), (56, 378339), (78, 271628), (84, 252226), (89, 238056), (91, 232824), (104, 203721), (109, 194376), (156, 135814), (168, 126113), (178, 119028), (182, 116412), (218, 97188), (267, 79352), (273, 77608), (312, 67907), (327, 64792), (356, 59514), (364, 58206), (436, 48594), (534, 39676), (546, 38804), (623, 34008), (654, 32396), (712, 29757), (728, 29103), (763, 27768), (872, 24297), (1068, 19838), (1092, 19402), (1157, 18312), (1246, 17004), (1308, 16198), (1417, 14952), (1526, 13884), (1869, 11336), (2136, 9919), (2184, 9701), (2289, 9256), (2314, 9156), (2492, 8502), (2616, 8099), (2834, 7476), (3052, 6942), (3471, 6104), (3738, 5668), (4251, 4984), (4578, 4628)]