256610560

素因数分解:

$2^8\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:304

約数の個数: 144

約数和(自身を含む): 659312640

約数和(自身を除く): 402702080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 31, 32, 40, 58, 62, 64, 80, 116, 124, 128, 145, 155, 160, 223, 232, 248, 256, 290, 310, 320, 446, 464, 496, 580, 620, 640, 892, 899, 928, 992, 1115, 1160, 1240, 1280, 1784, 1798, 1856, 1984, 2230, 2320, 2480, 3568, 3596, 3712, 3968, 4460, 4495, 4640, 4960, 6467, 6913, 7136, 7192, 7424, 7936, 8920, 8990, 9280, 9920, 12934, 13826, 14272, 14384, 17840, 17980, 18560, 19840, 25868, 27652, 28544, 28768, 32335, 34565, 35680, 35960, 37120, 39680, 51736, 55304, 57088, 57536, 64670, 69130, 71360, 71920, 103472, 110608, 115072, 129340, 138260, 142720, 143840, 200477, 206944, 221216, 230144, 258680, 276520, 285440, 287680, 400954, 413888, 442432, 517360, 553040, 575360, 801908, 827776, 884864, 1002385, 1034720, 1106080, 1150720, 1603816, 1655552, 1769728, 2004770, 2069440, 2212160, 3207632, 4009540, 4138880, 4424320, 6415264, 8019080, 8277760, 8848640, 12830528, 16038160, 25661056, 32076320, 51322112, 64152640, 128305280, 256610560]

約数ペア:

[(1, 256610560), (2, 128305280), (4, 64152640), (5, 51322112), (8, 32076320), (10, 25661056), (16, 16038160), (20, 12830528), (29, 8848640), (31, 8277760), (32, 8019080), (40, 6415264), (58, 4424320), (62, 4138880), (64, 4009540), (80, 3207632), (116, 2212160), (124, 2069440), (128, 2004770), (145, 1769728), (155, 1655552), (160, 1603816), (223, 1150720), (232, 1106080), (248, 1034720), (256, 1002385), (290, 884864), (310, 827776), (320, 801908), (446, 575360), (464, 553040), (496, 517360), (580, 442432), (620, 413888), (640, 400954), (892, 287680), (899, 285440), (928, 276520), (992, 258680), (1115, 230144), (1160, 221216), (1240, 206944), (1280, 200477), (1784, 143840), (1798, 142720), (1856, 138260), (1984, 129340), (2230, 115072), (2320, 110608), (2480, 103472), (3568, 71920), (3596, 71360), (3712, 69130), (3968, 64670), (4460, 57536), (4495, 57088), (4640, 55304), (4960, 51736), (6467, 39680), (6913, 37120), (7136, 35960), (7192, 35680), (7424, 34565), (7936, 32335), (8920, 28768), (8990, 28544), (9280, 27652), (9920, 25868), (12934, 19840), (13826, 18560), (14272, 17980), (14384, 17840)]