81318240

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{379}}^1$

素因数の和:549

約数の個数: 144

約数和(自身を含む): 280098000

約数和(自身を除く): 198779760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 149, 160, 180, 240, 288, 298, 360, 379, 447, 480, 596, 720, 745, 758, 894, 1137, 1192, 1341, 1440, 1490, 1516, 1788, 1895, 2235, 2274, 2384, 2682, 2980, 3032, 3411, 3576, 3790, 4470, 4548, 4768, 5364, 5685, 5960, 6064, 6705, 6822, 7152, 7580, 8940, 9096, 10728, 11370, 11920, 12128, 13410, 13644, 14304, 15160, 17055, 17880, 18192, 21456, 22740, 23840, 26820, 27288, 30320, 34110, 35760, 36384, 42912, 45480, 53640, 54576, 56471, 60640, 68220, 71520, 90960, 107280, 109152, 112942, 136440, 169413, 181920, 214560, 225884, 272880, 282355, 338826, 451768, 508239, 545760, 564710, 677652, 847065, 903536, 1016478, 1129420, 1355304, 1694130, 1807072, 2032956, 2258840, 2541195, 2710608, 3388260, 4065912, 4517680, 5082390, 5421216, 6776520, 8131824, 9035360, 10164780, 13553040, 16263648, 20329560, 27106080, 40659120, 81318240]

約数ペア:

[(1, 81318240), (2, 40659120), (3, 27106080), (4, 20329560), (5, 16263648), (6, 13553040), (8, 10164780), (9, 9035360), (10, 8131824), (12, 6776520), (15, 5421216), (16, 5082390), (18, 4517680), (20, 4065912), (24, 3388260), (30, 2710608), (32, 2541195), (36, 2258840), (40, 2032956), (45, 1807072), (48, 1694130), (60, 1355304), (72, 1129420), (80, 1016478), (90, 903536), (96, 847065), (120, 677652), (144, 564710), (149, 545760), (160, 508239), (180, 451768), (240, 338826), (288, 282355), (298, 272880), (360, 225884), (379, 214560), (447, 181920), (480, 169413), (596, 136440), (720, 112942), (745, 109152), (758, 107280), (894, 90960), (1137, 71520), (1192, 68220), (1341, 60640), (1440, 56471), (1490, 54576), (1516, 53640), (1788, 45480), (1895, 42912), (2235, 36384), (2274, 35760), (2384, 34110), (2682, 30320), (2980, 27288), (3032, 26820), (3411, 23840), (3576, 22740), (3790, 21456), (4470, 18192), (4548, 17880), (4768, 17055), (5364, 15160), (5685, 14304), (5960, 13644), (6064, 13410), (6705, 12128), (6822, 11920), (7152, 11370), (7580, 10728), (8940, 9096)]