21640056

素因数分解:

$2^3\times 3^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1$

素因数の和:428

約数の個数: 64

約数和(自身を含む): 57024000

約数和(自身を除く): 35383944

約数列:

[1, 2, 3, 4, 6, 8, 12, 23, 24, 46, 69, 92, 138, 184, 197, 199, 276, 394, 398, 552, 591, 597, 788, 796, 1182, 1194, 1576, 1592, 2364, 2388, 4531, 4577, 4728, 4776, 9062, 9154, 13593, 13731, 18124, 18308, 27186, 27462, 36248, 36616, 39203, 54372, 54924, 78406, 108744, 109848, 117609, 156812, 235218, 313624, 470436, 901669, 940872, 1803338, 2705007, 3606676, 5410014, 7213352, 10820028, 21640056]

約数ペア:

[(1, 21640056), (2, 10820028), (3, 7213352), (4, 5410014), (6, 3606676), (8, 2705007), (12, 1803338), (23, 940872), (24, 901669), (46, 470436), (69, 313624), (92, 235218), (138, 156812), (184, 117609), (197, 109848), (199, 108744), (276, 78406), (394, 54924), (398, 54372), (552, 39203), (591, 36616), (597, 36248), (788, 27462), (796, 27186), (1182, 18308), (1194, 18124), (1576, 13731), (1592, 13593), (2364, 9154), (2388, 9062), (4531, 4776), (4577, 4728)]