87981440

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:224

約数の個数: 128

約数和(自身を含む): 226195200

約数和(自身を除く): 138213760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 43, 46, 64, 80, 86, 92, 115, 128, 139, 160, 172, 184, 215, 230, 278, 320, 344, 368, 430, 460, 556, 640, 688, 695, 736, 860, 920, 989, 1112, 1376, 1390, 1472, 1720, 1840, 1978, 2224, 2752, 2780, 2944, 3197, 3440, 3680, 3956, 4448, 4945, 5504, 5560, 5977, 6394, 6880, 7360, 7912, 8896, 9890, 11120, 11954, 12788, 13760, 14720, 15824, 15985, 17792, 19780, 22240, 23908, 25576, 27520, 29885, 31648, 31970, 39560, 44480, 47816, 51152, 59770, 63296, 63940, 79120, 88960, 95632, 102304, 119540, 126592, 127880, 137471, 158240, 191264, 204608, 239080, 255760, 274942, 316480, 382528, 409216, 478160, 511520, 549884, 632960, 687355, 765056, 956320, 1023040, 1099768, 1374710, 1912640, 2046080, 2199536, 2749420, 3825280, 4399072, 5498840, 8798144, 10997680, 17596288, 21995360, 43990720, 87981440]

約数ペア:

[(1, 87981440), (2, 43990720), (4, 21995360), (5, 17596288), (8, 10997680), (10, 8798144), (16, 5498840), (20, 4399072), (23, 3825280), (32, 2749420), (40, 2199536), (43, 2046080), (46, 1912640), (64, 1374710), (80, 1099768), (86, 1023040), (92, 956320), (115, 765056), (128, 687355), (139, 632960), (160, 549884), (172, 511520), (184, 478160), (215, 409216), (230, 382528), (278, 316480), (320, 274942), (344, 255760), (368, 239080), (430, 204608), (460, 191264), (556, 158240), (640, 137471), (688, 127880), (695, 126592), (736, 119540), (860, 102304), (920, 95632), (989, 88960), (1112, 79120), (1376, 63940), (1390, 63296), (1472, 59770), (1720, 51152), (1840, 47816), (1978, 44480), (2224, 39560), (2752, 31970), (2780, 31648), (2944, 29885), (3197, 27520), (3440, 25576), (3680, 23908), (3956, 22240), (4448, 19780), (4945, 17792), (5504, 15985), (5560, 15824), (5977, 14720), (6394, 13760), (6880, 12788), (7360, 11954), (7912, 11120), (8896, 9890)]