20673520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1$

素因数の和:135

約数の個数: 160

約数和(自身を含む): 60710400

約数和(自身を除く): 40036880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 29, 35, 38, 40, 56, 58, 67, 70, 76, 80, 95, 112, 116, 133, 134, 140, 145, 152, 190, 203, 232, 266, 268, 280, 290, 304, 335, 380, 406, 464, 469, 532, 536, 551, 560, 580, 665, 670, 760, 812, 938, 1015, 1064, 1072, 1102, 1160, 1273, 1330, 1340, 1520, 1624, 1876, 1943, 2030, 2128, 2204, 2320, 2345, 2546, 2660, 2680, 2755, 3248, 3752, 3857, 3886, 4060, 4408, 4690, 5092, 5320, 5360, 5510, 6365, 7504, 7714, 7772, 8120, 8816, 8911, 9380, 9715, 10184, 10640, 11020, 12730, 13601, 15428, 15544, 16240, 17822, 18760, 19285, 19430, 20368, 22040, 25460, 27202, 30856, 31088, 35644, 36917, 37520, 38570, 38860, 44080, 44555, 50920, 54404, 61712, 68005, 71288, 73834, 77140, 77720, 89110, 101840, 108808, 136010, 142576, 147668, 154280, 155440, 178220, 184585, 217616, 258419, 272020, 295336, 308560, 356440, 369170, 516838, 544040, 590672, 712880, 738340, 1033676, 1088080, 1292095, 1476680, 2067352, 2584190, 2953360, 4134704, 5168380, 10336760, 20673520]

約数ペア:

[(1, 20673520), (2, 10336760), (4, 5168380), (5, 4134704), (7, 2953360), (8, 2584190), (10, 2067352), (14, 1476680), (16, 1292095), (19, 1088080), (20, 1033676), (28, 738340), (29, 712880), (35, 590672), (38, 544040), (40, 516838), (56, 369170), (58, 356440), (67, 308560), (70, 295336), (76, 272020), (80, 258419), (95, 217616), (112, 184585), (116, 178220), (133, 155440), (134, 154280), (140, 147668), (145, 142576), (152, 136010), (190, 108808), (203, 101840), (232, 89110), (266, 77720), (268, 77140), (280, 73834), (290, 71288), (304, 68005), (335, 61712), (380, 54404), (406, 50920), (464, 44555), (469, 44080), (532, 38860), (536, 38570), (551, 37520), (560, 36917), (580, 35644), (665, 31088), (670, 30856), (760, 27202), (812, 25460), (938, 22040), (1015, 20368), (1064, 19430), (1072, 19285), (1102, 18760), (1160, 17822), (1273, 16240), (1330, 15544), (1340, 15428), (1520, 13601), (1624, 12730), (1876, 11020), (1943, 10640), (2030, 10184), (2128, 9715), (2204, 9380), (2320, 8911), (2345, 8816), (2546, 8120), (2660, 7772), (2680, 7714), (2755, 7504), (3248, 6365), (3752, 5510), (3857, 5360), (3886, 5320), (4060, 5092), (4408, 4690)]