21168280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1$

素因数の和:233

約数の個数: 128

約数和(自身を含む): 60134400

約数和(自身を除く): 38966120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 23, 28, 35, 38, 40, 46, 56, 70, 76, 92, 95, 115, 133, 140, 152, 161, 173, 184, 190, 230, 266, 280, 322, 346, 380, 437, 460, 532, 644, 665, 692, 760, 805, 865, 874, 920, 1064, 1211, 1288, 1330, 1384, 1610, 1730, 1748, 2185, 2422, 2660, 3059, 3220, 3287, 3460, 3496, 3979, 4370, 4844, 5320, 6055, 6118, 6440, 6574, 6920, 7958, 8740, 9688, 12110, 12236, 13148, 15295, 15916, 16435, 17480, 19895, 23009, 24220, 24472, 26296, 27853, 30590, 31832, 32870, 39790, 46018, 48440, 55706, 61180, 65740, 75601, 79580, 92036, 111412, 115045, 122360, 131480, 139265, 151202, 159160, 184072, 222824, 230090, 278530, 302404, 378005, 460180, 529207, 557060, 604808, 756010, 920360, 1058414, 1114120, 1512020, 2116828, 2646035, 3024040, 4233656, 5292070, 10584140, 21168280]

約数ペア:

[(1, 21168280), (2, 10584140), (4, 5292070), (5, 4233656), (7, 3024040), (8, 2646035), (10, 2116828), (14, 1512020), (19, 1114120), (20, 1058414), (23, 920360), (28, 756010), (35, 604808), (38, 557060), (40, 529207), (46, 460180), (56, 378005), (70, 302404), (76, 278530), (92, 230090), (95, 222824), (115, 184072), (133, 159160), (140, 151202), (152, 139265), (161, 131480), (173, 122360), (184, 115045), (190, 111412), (230, 92036), (266, 79580), (280, 75601), (322, 65740), (346, 61180), (380, 55706), (437, 48440), (460, 46018), (532, 39790), (644, 32870), (665, 31832), (692, 30590), (760, 27853), (805, 26296), (865, 24472), (874, 24220), (920, 23009), (1064, 19895), (1211, 17480), (1288, 16435), (1330, 15916), (1384, 15295), (1610, 13148), (1730, 12236), (1748, 12110), (2185, 9688), (2422, 8740), (2660, 7958), (3059, 6920), (3220, 6574), (3287, 6440), (3460, 6118), (3496, 6055), (3979, 5320), (4370, 4844)]