21620368

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:165

約数の個数: 120

約数和(自身を含む): 55978560

約数和(自身を除く): 34358192

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 23, 28, 44, 46, 49, 56, 77, 88, 92, 98, 109, 112, 154, 161, 176, 184, 196, 218, 253, 308, 322, 368, 392, 436, 506, 539, 616, 644, 763, 784, 872, 1012, 1078, 1127, 1199, 1232, 1288, 1526, 1744, 1771, 2024, 2156, 2254, 2398, 2507, 2576, 3052, 3542, 4048, 4312, 4508, 4796, 5014, 5341, 6104, 7084, 8393, 8624, 9016, 9592, 10028, 10682, 12208, 12397, 14168, 16786, 17549, 18032, 19184, 20056, 21364, 24794, 27577, 28336, 33572, 35098, 40112, 42728, 49588, 55154, 58751, 67144, 70196, 85456, 99176, 110308, 117502, 122843, 134288, 140392, 193039, 198352, 220616, 235004, 245686, 280784, 386078, 441232, 470008, 491372, 772156, 940016, 982744, 1351273, 1544312, 1965488, 2702546, 3088624, 5405092, 10810184, 21620368]

約数ペア:

[(1, 21620368), (2, 10810184), (4, 5405092), (7, 3088624), (8, 2702546), (11, 1965488), (14, 1544312), (16, 1351273), (22, 982744), (23, 940016), (28, 772156), (44, 491372), (46, 470008), (49, 441232), (56, 386078), (77, 280784), (88, 245686), (92, 235004), (98, 220616), (109, 198352), (112, 193039), (154, 140392), (161, 134288), (176, 122843), (184, 117502), (196, 110308), (218, 99176), (253, 85456), (308, 70196), (322, 67144), (368, 58751), (392, 55154), (436, 49588), (506, 42728), (539, 40112), (616, 35098), (644, 33572), (763, 28336), (784, 27577), (872, 24794), (1012, 21364), (1078, 20056), (1127, 19184), (1199, 18032), (1232, 17549), (1288, 16786), (1526, 14168), (1744, 12397), (1771, 12208), (2024, 10682), (2156, 10028), (2254, 9592), (2398, 9016), (2507, 8624), (2576, 8393), (3052, 7084), (3542, 6104), (4048, 5341), (4312, 5014), (4508, 4796)]