81151280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{263}}^1$

素因数の和:331

約数の個数: 160

約数和(自身を含む): 235699200

約数和(自身を除く): 154547920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 29, 35, 38, 40, 56, 58, 70, 76, 80, 95, 112, 116, 133, 140, 145, 152, 190, 203, 232, 263, 266, 280, 290, 304, 380, 406, 464, 526, 532, 551, 560, 580, 665, 760, 812, 1015, 1052, 1064, 1102, 1160, 1315, 1330, 1520, 1624, 1841, 2030, 2104, 2128, 2204, 2320, 2630, 2660, 2755, 3248, 3682, 3857, 4060, 4208, 4408, 4997, 5260, 5320, 5510, 7364, 7627, 7714, 8120, 8816, 9205, 9994, 10520, 10640, 11020, 14728, 15254, 15428, 16240, 18410, 19285, 19988, 21040, 22040, 24985, 29456, 30508, 30856, 34979, 36820, 38135, 38570, 39976, 44080, 49970, 53389, 61016, 61712, 69958, 73640, 76270, 77140, 79952, 99940, 106778, 122032, 139916, 144913, 147280, 152540, 154280, 174895, 199880, 213556, 266945, 279832, 289826, 305080, 308560, 349790, 399760, 427112, 533890, 559664, 579652, 610160, 699580, 724565, 854224, 1014391, 1067780, 1159304, 1399160, 1449130, 2028782, 2135560, 2318608, 2798320, 2898260, 4057564, 4271120, 5071955, 5796520, 8115128, 10143910, 11593040, 16230256, 20287820, 40575640, 81151280]

約数ペア:

[(1, 81151280), (2, 40575640), (4, 20287820), (5, 16230256), (7, 11593040), (8, 10143910), (10, 8115128), (14, 5796520), (16, 5071955), (19, 4271120), (20, 4057564), (28, 2898260), (29, 2798320), (35, 2318608), (38, 2135560), (40, 2028782), (56, 1449130), (58, 1399160), (70, 1159304), (76, 1067780), (80, 1014391), (95, 854224), (112, 724565), (116, 699580), (133, 610160), (140, 579652), (145, 559664), (152, 533890), (190, 427112), (203, 399760), (232, 349790), (263, 308560), (266, 305080), (280, 289826), (290, 279832), (304, 266945), (380, 213556), (406, 199880), (464, 174895), (526, 154280), (532, 152540), (551, 147280), (560, 144913), (580, 139916), (665, 122032), (760, 106778), (812, 99940), (1015, 79952), (1052, 77140), (1064, 76270), (1102, 73640), (1160, 69958), (1315, 61712), (1330, 61016), (1520, 53389), (1624, 49970), (1841, 44080), (2030, 39976), (2104, 38570), (2128, 38135), (2204, 36820), (2320, 34979), (2630, 30856), (2660, 30508), (2755, 29456), (3248, 24985), (3682, 22040), (3857, 21040), (4060, 19988), (4208, 19285), (4408, 18410), (4997, 16240), (5260, 15428), (5320, 15254), (5510, 14728), (7364, 11020), (7627, 10640), (7714, 10520), (8120, 9994), (8816, 9205)]