21720648

素因数分解:

$2^3\times 3^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:179

約数の個数: 96

約数和(自身を含む): 60350400

約数和(自身を除く): 38629752

約数列:

[1, 2, 3, 4, 6, 8, 12, 19, 23, 24, 38, 46, 57, 69, 76, 92, 109, 114, 138, 152, 184, 218, 228, 276, 327, 361, 436, 437, 456, 552, 654, 722, 872, 874, 1083, 1308, 1311, 1444, 1748, 2071, 2166, 2507, 2616, 2622, 2888, 3496, 4142, 4332, 5014, 5244, 6213, 7521, 8284, 8303, 8664, 10028, 10488, 12426, 15042, 16568, 16606, 20056, 24852, 24909, 30084, 33212, 39349, 47633, 49704, 49818, 60168, 66424, 78698, 95266, 99636, 118047, 142899, 157396, 190532, 199272, 236094, 285798, 314792, 381064, 472188, 571596, 905027, 944376, 1143192, 1810054, 2715081, 3620108, 5430162, 7240216, 10860324, 21720648]

約数ペア:

[(1, 21720648), (2, 10860324), (3, 7240216), (4, 5430162), (6, 3620108), (8, 2715081), (12, 1810054), (19, 1143192), (23, 944376), (24, 905027), (38, 571596), (46, 472188), (57, 381064), (69, 314792), (76, 285798), (92, 236094), (109, 199272), (114, 190532), (138, 157396), (152, 142899), (184, 118047), (218, 99636), (228, 95266), (276, 78698), (327, 66424), (361, 60168), (436, 49818), (437, 49704), (456, 47633), (552, 39349), (654, 33212), (722, 30084), (872, 24909), (874, 24852), (1083, 20056), (1308, 16606), (1311, 16568), (1444, 15042), (1748, 12426), (2071, 10488), (2166, 10028), (2507, 8664), (2616, 8303), (2622, 8284), (2888, 7521), (3496, 6213), (4142, 5244), (4332, 5014)]