72680320

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:220

約数の個数: 128

約数和(自身を含む): 188496000

約数和(自身を除く): 115815680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 43, 64, 76, 80, 86, 95, 128, 139, 152, 160, 172, 190, 215, 278, 304, 320, 344, 380, 430, 556, 608, 640, 688, 695, 760, 817, 860, 1112, 1216, 1376, 1390, 1520, 1634, 1720, 2224, 2432, 2641, 2752, 2780, 3040, 3268, 3440, 4085, 4448, 5282, 5504, 5560, 5977, 6080, 6536, 6880, 8170, 8896, 10564, 11120, 11954, 12160, 13072, 13205, 13760, 16340, 17792, 21128, 22240, 23908, 26144, 26410, 27520, 29885, 32680, 42256, 44480, 47816, 52288, 52820, 59770, 65360, 84512, 88960, 95632, 104576, 105640, 113563, 119540, 130720, 169024, 191264, 211280, 227126, 239080, 261440, 338048, 382528, 422560, 454252, 478160, 522880, 567815, 765056, 845120, 908504, 956320, 1135630, 1690240, 1817008, 1912640, 2271260, 3634016, 3825280, 4542520, 7268032, 9085040, 14536064, 18170080, 36340160, 72680320]

約数ペア:

[(1, 72680320), (2, 36340160), (4, 18170080), (5, 14536064), (8, 9085040), (10, 7268032), (16, 4542520), (19, 3825280), (20, 3634016), (32, 2271260), (38, 1912640), (40, 1817008), (43, 1690240), (64, 1135630), (76, 956320), (80, 908504), (86, 845120), (95, 765056), (128, 567815), (139, 522880), (152, 478160), (160, 454252), (172, 422560), (190, 382528), (215, 338048), (278, 261440), (304, 239080), (320, 227126), (344, 211280), (380, 191264), (430, 169024), (556, 130720), (608, 119540), (640, 113563), (688, 105640), (695, 104576), (760, 95632), (817, 88960), (860, 84512), (1112, 65360), (1216, 59770), (1376, 52820), (1390, 52288), (1520, 47816), (1634, 44480), (1720, 42256), (2224, 32680), (2432, 29885), (2641, 27520), (2752, 26410), (2780, 26144), (3040, 23908), (3268, 22240), (3440, 21128), (4085, 17792), (4448, 16340), (5282, 13760), (5504, 13205), (5560, 13072), (5977, 12160), (6080, 11954), (6536, 11120), (6880, 10564), (8170, 8896)]