20901004720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{79}}^1\times {\mathrm{9161}}^1$

素因数の和:9291

約数の個数: 120

約数和(自身を含む): 51941943360

約数和(自身を除く): 31040938640

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 79, 80, 95, 152, 158, 190, 304, 316, 361, 380, 395, 632, 722, 760, 790, 1264, 1444, 1501, 1520, 1580, 1805, 2888, 3002, 3160, 3610, 5776, 6004, 6320, 7220, 7505, 9161, 12008, 14440, 15010, 18322, 24016, 28519, 28880, 30020, 36644, 45805, 57038, 60040, 73288, 91610, 114076, 120080, 142595, 146576, 174059, 183220, 228152, 285190, 348118, 366440, 456304, 570380, 696236, 723719, 732880, 870295, 1140760, 1392472, 1447438, 1740590, 2281520, 2784944, 2894876, 3307121, 3481180, 3618595, 5789752, 6614242, 6962360, 7237190, 11579504, 13228484, 13750661, 13924720, 14474380, 16535605, 26456968, 27501322, 28948760, 33071210, 52913936, 55002644, 57897520, 66142420, 68753305, 110005288, 132284840, 137506610, 220010576, 261262559, 264569680, 275013220, 522525118, 550026440, 1045050236, 1100052880, 1306312795, 2090100472, 2612625590, 4180200944, 5225251180, 10450502360, 20901004720]

約数ペア:

[(1, 20901004720), (2, 10450502360), (4, 5225251180), (5, 4180200944), (8, 2612625590), (10, 2090100472), (16, 1306312795), (19, 1100052880), (20, 1045050236), (38, 550026440), (40, 522525118), (76, 275013220), (79, 264569680), (80, 261262559), (95, 220010576), (152, 137506610), (158, 132284840), (190, 110005288), (304, 68753305), (316, 66142420), (361, 57897520), (380, 55002644), (395, 52913936), (632, 33071210), (722, 28948760), (760, 27501322), (790, 26456968), (1264, 16535605), (1444, 14474380), (1501, 13924720), (1520, 13750661), (1580, 13228484), (1805, 11579504), (2888, 7237190), (3002, 6962360), (3160, 6614242), (3610, 5789752), (5776, 3618595), (6004, 3481180), (6320, 3307121), (7220, 2894876), (7505, 2784944), (9161, 2281520), (12008, 1740590), (14440, 1447438), (15010, 1392472), (18322, 1140760), (24016, 870295), (28519, 732880), (28880, 723719), (30020, 696236), (36644, 570380), (45805, 456304), (57038, 366440), (60040, 348118), (73288, 285190), (91610, 228152), (114076, 183220), (120080, 174059), (142595, 146576)]