281157520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{263}}^1$

素因数の和:389

約数の個数: 160

約数和(自身を含む): 791949312

約数和(自身を除く): 510791792

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 83, 92, 112, 115, 140, 161, 166, 184, 230, 263, 280, 322, 332, 368, 415, 460, 526, 560, 581, 644, 664, 805, 830, 920, 1052, 1162, 1288, 1315, 1328, 1610, 1660, 1840, 1841, 1909, 2104, 2324, 2576, 2630, 2905, 3220, 3320, 3682, 3818, 4208, 4648, 5260, 5810, 6049, 6440, 6640, 7364, 7636, 9205, 9296, 9545, 10520, 11620, 12098, 12880, 13363, 14728, 15272, 18410, 19090, 21040, 21829, 23240, 24196, 26726, 29456, 30245, 30544, 36820, 38180, 42343, 43658, 46480, 48392, 53452, 60490, 66815, 73640, 76360, 84686, 87316, 96784, 106904, 109145, 120980, 133630, 147280, 152720, 152803, 169372, 174632, 211715, 213808, 218290, 241960, 267260, 305606, 338744, 349264, 423430, 436580, 483920, 502067, 534520, 611212, 677488, 764015, 846860, 873160, 1004134, 1069040, 1222424, 1528030, 1693720, 1746320, 2008268, 2444848, 2510335, 3056060, 3387440, 3514469, 4016536, 5020670, 6112120, 7028938, 8033072, 10041340, 12224240, 14057876, 17572345, 20082680, 28115752, 35144690, 40165360, 56231504, 70289380, 140578760, 281157520]

約数ペア:

[(1, 281157520), (2, 140578760), (4, 70289380), (5, 56231504), (7, 40165360), (8, 35144690), (10, 28115752), (14, 20082680), (16, 17572345), (20, 14057876), (23, 12224240), (28, 10041340), (35, 8033072), (40, 7028938), (46, 6112120), (56, 5020670), (70, 4016536), (80, 3514469), (83, 3387440), (92, 3056060), (112, 2510335), (115, 2444848), (140, 2008268), (161, 1746320), (166, 1693720), (184, 1528030), (230, 1222424), (263, 1069040), (280, 1004134), (322, 873160), (332, 846860), (368, 764015), (415, 677488), (460, 611212), (526, 534520), (560, 502067), (581, 483920), (644, 436580), (664, 423430), (805, 349264), (830, 338744), (920, 305606), (1052, 267260), (1162, 241960), (1288, 218290), (1315, 213808), (1328, 211715), (1610, 174632), (1660, 169372), (1840, 152803), (1841, 152720), (1909, 147280), (2104, 133630), (2324, 120980), (2576, 109145), (2630, 106904), (2905, 96784), (3220, 87316), (3320, 84686), (3682, 76360), (3818, 73640), (4208, 66815), (4648, 60490), (5260, 53452), (5810, 48392), (6049, 46480), (6440, 43658), (6640, 42343), (7364, 38180), (7636, 36820), (9205, 30544), (9296, 30245), (9545, 29456), (10520, 26726), (11620, 24196), (12098, 23240), (12880, 21829), (13363, 21040), (14728, 19090), (15272, 18410)]