20376160

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{113}}^1$

素因数の和:165

約数の個数: 144

約数和(自身を含む): 58949856

約数和(自身を除く): 38573696

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 49, 56, 70, 80, 92, 98, 112, 113, 115, 140, 160, 161, 184, 196, 224, 226, 230, 245, 280, 322, 368, 392, 452, 460, 490, 560, 565, 644, 736, 784, 791, 805, 904, 920, 980, 1120, 1127, 1130, 1288, 1568, 1582, 1610, 1808, 1840, 1960, 2254, 2260, 2576, 2599, 3164, 3220, 3616, 3680, 3920, 3955, 4508, 4520, 5152, 5198, 5537, 5635, 6328, 6440, 7840, 7910, 9016, 9040, 10396, 11074, 11270, 12656, 12880, 12995, 15820, 18032, 18080, 18193, 20792, 22148, 22540, 25312, 25760, 25990, 27685, 31640, 36064, 36386, 41584, 44296, 45080, 51980, 55370, 63280, 72772, 83168, 88592, 90160, 90965, 103960, 110740, 126560, 127351, 145544, 177184, 180320, 181930, 207920, 221480, 254702, 291088, 363860, 415840, 442960, 509404, 582176, 636755, 727720, 885920, 1018808, 1273510, 1455440, 2037616, 2547020, 2910880, 4075232, 5094040, 10188080, 20376160]

約数ペア:

[(1, 20376160), (2, 10188080), (4, 5094040), (5, 4075232), (7, 2910880), (8, 2547020), (10, 2037616), (14, 1455440), (16, 1273510), (20, 1018808), (23, 885920), (28, 727720), (32, 636755), (35, 582176), (40, 509404), (46, 442960), (49, 415840), (56, 363860), (70, 291088), (80, 254702), (92, 221480), (98, 207920), (112, 181930), (113, 180320), (115, 177184), (140, 145544), (160, 127351), (161, 126560), (184, 110740), (196, 103960), (224, 90965), (226, 90160), (230, 88592), (245, 83168), (280, 72772), (322, 63280), (368, 55370), (392, 51980), (452, 45080), (460, 44296), (490, 41584), (560, 36386), (565, 36064), (644, 31640), (736, 27685), (784, 25990), (791, 25760), (805, 25312), (904, 22540), (920, 22148), (980, 20792), (1120, 18193), (1127, 18080), (1130, 18032), (1288, 15820), (1568, 12995), (1582, 12880), (1610, 12656), (1808, 11270), (1840, 11074), (1960, 10396), (2254, 9040), (2260, 9016), (2576, 7910), (2599, 7840), (3164, 6440), (3220, 6328), (3616, 5635), (3680, 5537), (3920, 5198), (3955, 5152), (4508, 4520)]