20335047680

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{128119}}^1$

素因数の和:128175

約数の個数: 88

約数和(自身を含む): 50354234880

約数和(自身を除く): 30019187200

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, 2480, 2560, 3968, 4960, 5120, 7936, 9920, 15872, 19840, 31744, 39680, 79360, 128119, 158720, 256238, 512476, 640595, 1024952, 1281190, 2049904, 2562380, 3971689, 4099808, 5124760, 7943378, 8199616, 10249520, 15886756, 16399232, 19858445, 20499040, 31773512, 32798464, 39716890, 40998080, 63547024, 65596928, 79433780, 81996160, 127094048, 131193856, 158867560, 163992320, 254188096, 317735120, 327984640, 508376192, 635470240, 655969280, 1016752384, 1270940480, 2033504768, 2541880960, 4067009536, 5083761920, 10167523840, 20335047680]

約数ペア:

[(1, 20335047680), (2, 10167523840), (4, 5083761920), (5, 4067009536), (8, 2541880960), (10, 2033504768), (16, 1270940480), (20, 1016752384), (31, 655969280), (32, 635470240), (40, 508376192), (62, 327984640), (64, 317735120), (80, 254188096), (124, 163992320), (128, 158867560), (155, 131193856), (160, 127094048), (248, 81996160), (256, 79433780), (310, 65596928), (320, 63547024), (496, 40998080), (512, 39716890), (620, 32798464), (640, 31773512), (992, 20499040), (1024, 19858445), (1240, 16399232), (1280, 15886756), (1984, 10249520), (2480, 8199616), (2560, 7943378), (3968, 5124760), (4960, 4099808), (5120, 3971689), (7936, 2562380), (9920, 2049904), (15872, 1281190), (19840, 1024952), (31744, 640595), (39680, 512476), (79360, 256238), (128119, 158720)]