20637409280

素因数分解:

$2^{13}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16253}}^1$

素因数の和:16315

約数の個数: 112

約数和(自身を含む): 51127542144

約数和(自身を除く): 30490132864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1024, 1240, 1280, 1984, 2048, 2480, 2560, 3968, 4096, 4960, 5120, 7936, 8192, 9920, 10240, 15872, 16253, 19840, 20480, 31744, 32506, 39680, 40960, 63488, 65012, 79360, 81265, 126976, 130024, 158720, 162530, 253952, 260048, 317440, 325060, 503843, 520096, 634880, 650120, 1007686, 1040192, 1269760, 1300240, 2015372, 2080384, 2519215, 2600480, 4030744, 4160768, 5038430, 5200960, 8061488, 8321536, 10076860, 10401920, 16122976, 16643072, 20153720, 20803840, 32245952, 33286144, 40307440, 41607680, 64491904, 66572288, 80614880, 83215360, 128983808, 133144576, 161229760, 166430720, 257967616, 322459520, 332861440, 515935232, 644919040, 665722880, 1031870464, 1289838080, 2063740928, 2579676160, 4127481856, 5159352320, 10318704640, 20637409280]

約数ペア:

[(1, 20637409280), (2, 10318704640), (4, 5159352320), (5, 4127481856), (8, 2579676160), (10, 2063740928), (16, 1289838080), (20, 1031870464), (31, 665722880), (32, 644919040), (40, 515935232), (62, 332861440), (64, 322459520), (80, 257967616), (124, 166430720), (128, 161229760), (155, 133144576), (160, 128983808), (248, 83215360), (256, 80614880), (310, 66572288), (320, 64491904), (496, 41607680), (512, 40307440), (620, 33286144), (640, 32245952), (992, 20803840), (1024, 20153720), (1240, 16643072), (1280, 16122976), (1984, 10401920), (2048, 10076860), (2480, 8321536), (2560, 8061488), (3968, 5200960), (4096, 5038430), (4960, 4160768), (5120, 4030744), (7936, 2600480), (8192, 2519215), (9920, 2080384), (10240, 2015372), (15872, 1300240), (16253, 1269760), (19840, 1040192), (20480, 1007686), (31744, 650120), (32506, 634880), (39680, 520096), (40960, 503843), (63488, 325060), (65012, 317440), (79360, 260048), (81265, 253952), (126976, 162530), (130024, 158720)]