80687720

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{167}}^1\times {\mathrm{257}}^1$

素因数の和:482

約数の個数: 64

約数和(自身を含む): 187246080

約数和(自身を除く): 106558360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 167, 188, 235, 257, 334, 376, 470, 514, 668, 835, 940, 1028, 1285, 1336, 1670, 1880, 2056, 2570, 3340, 5140, 6680, 7849, 10280, 12079, 15698, 24158, 31396, 39245, 42919, 48316, 60395, 62792, 78490, 85838, 96632, 120790, 156980, 171676, 214595, 241580, 313960, 343352, 429190, 483160, 858380, 1716760, 2017193, 4034386, 8068772, 10085965, 16137544, 20171930, 40343860, 80687720]

約数ペア:

[(1, 80687720), (2, 40343860), (4, 20171930), (5, 16137544), (8, 10085965), (10, 8068772), (20, 4034386), (40, 2017193), (47, 1716760), (94, 858380), (167, 483160), (188, 429190), (235, 343352), (257, 313960), (334, 241580), (376, 214595), (470, 171676), (514, 156980), (668, 120790), (835, 96632), (940, 85838), (1028, 78490), (1285, 62792), (1336, 60395), (1670, 48316), (1880, 42919), (2056, 39245), (2570, 31396), (3340, 24158), (5140, 15698), (6680, 12079), (7849, 10280)]