27805520

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:252

約数の個数: 80

約数和(自身を含む): 67763520

約数和(自身を除く): 39958000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 59, 80, 86, 118, 137, 172, 215, 236, 274, 295, 344, 430, 472, 548, 590, 685, 688, 860, 944, 1096, 1180, 1370, 1720, 2192, 2360, 2537, 2740, 3440, 4720, 5074, 5480, 5891, 8083, 10148, 10960, 11782, 12685, 16166, 20296, 23564, 25370, 29455, 32332, 40415, 40592, 47128, 50740, 58910, 64664, 80830, 94256, 101480, 117820, 129328, 161660, 202960, 235640, 323320, 347569, 471280, 646640, 695138, 1390276, 1737845, 2780552, 3475690, 5561104, 6951380, 13902760, 27805520]

約数ペア:

[(1, 27805520), (2, 13902760), (4, 6951380), (5, 5561104), (8, 3475690), (10, 2780552), (16, 1737845), (20, 1390276), (40, 695138), (43, 646640), (59, 471280), (80, 347569), (86, 323320), (118, 235640), (137, 202960), (172, 161660), (215, 129328), (236, 117820), (274, 101480), (295, 94256), (344, 80830), (430, 64664), (472, 58910), (548, 50740), (590, 47128), (685, 40592), (688, 40415), (860, 32332), (944, 29455), (1096, 25370), (1180, 23564), (1370, 20296), (1720, 16166), (2192, 12685), (2360, 11782), (2537, 10960), (2740, 10148), (3440, 8083), (4720, 5891), (5074, 5480)]