21941280

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{1693}}^1$

素因数の和:1720

約数の個数: 120

約数和(自身を含む): 77480172

約数和(自身を除く): 55538892

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 216, 240, 270, 288, 324, 360, 405, 432, 480, 540, 648, 720, 810, 864, 1080, 1296, 1440, 1620, 1693, 2160, 2592, 3240, 3386, 4320, 5079, 6480, 6772, 8465, 10158, 12960, 13544, 15237, 16930, 20316, 25395, 27088, 30474, 33860, 40632, 45711, 50790, 54176, 60948, 67720, 76185, 81264, 91422, 101580, 121896, 135440, 137133, 152370, 162528, 182844, 203160, 228555, 243792, 270880, 274266, 304740, 365688, 406320, 457110, 487584, 548532, 609480, 685665, 731376, 812640, 914220, 1097064, 1218960, 1371330, 1462752, 1828440, 2194128, 2437920, 2742660, 3656880, 4388256, 5485320, 7313760, 10970640, 21941280]

約数ペア:

[(1, 21941280), (2, 10970640), (3, 7313760), (4, 5485320), (5, 4388256), (6, 3656880), (8, 2742660), (9, 2437920), (10, 2194128), (12, 1828440), (15, 1462752), (16, 1371330), (18, 1218960), (20, 1097064), (24, 914220), (27, 812640), (30, 731376), (32, 685665), (36, 609480), (40, 548532), (45, 487584), (48, 457110), (54, 406320), (60, 365688), (72, 304740), (80, 274266), (81, 270880), (90, 243792), (96, 228555), (108, 203160), (120, 182844), (135, 162528), (144, 152370), (160, 137133), (162, 135440), (180, 121896), (216, 101580), (240, 91422), (270, 81264), (288, 76185), (324, 67720), (360, 60948), (405, 54176), (432, 50790), (480, 45711), (540, 40632), (648, 33860), (720, 30474), (810, 27088), (864, 25395), (1080, 20316), (1296, 16930), (1440, 15237), (1620, 13544), (1693, 12960), (2160, 10158), (2592, 8465), (3240, 6772), (3386, 6480), (4320, 5079)]