21028440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{401}}^1$

素因数の和:457

約数の個数: 128

約数和(自身を含む): 69465600

約数和(自身を除く): 48437160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 23, 24, 30, 38, 40, 46, 57, 60, 69, 76, 92, 95, 114, 115, 120, 138, 152, 184, 190, 228, 230, 276, 285, 345, 380, 401, 437, 456, 460, 552, 570, 690, 760, 802, 874, 920, 1140, 1203, 1311, 1380, 1604, 1748, 2005, 2185, 2280, 2406, 2622, 2760, 3208, 3496, 4010, 4370, 4812, 5244, 6015, 6555, 7619, 8020, 8740, 9223, 9624, 10488, 12030, 13110, 15238, 16040, 17480, 18446, 22857, 24060, 26220, 27669, 30476, 36892, 38095, 45714, 46115, 48120, 52440, 55338, 60952, 73784, 76190, 91428, 92230, 110676, 114285, 138345, 152380, 175237, 182856, 184460, 221352, 228570, 276690, 304760, 350474, 368920, 457140, 525711, 553380, 700948, 876185, 914280, 1051422, 1106760, 1401896, 1752370, 2102844, 2628555, 3504740, 4205688, 5257110, 7009480, 10514220, 21028440]

約数ペア:

[(1, 21028440), (2, 10514220), (3, 7009480), (4, 5257110), (5, 4205688), (6, 3504740), (8, 2628555), (10, 2102844), (12, 1752370), (15, 1401896), (19, 1106760), (20, 1051422), (23, 914280), (24, 876185), (30, 700948), (38, 553380), (40, 525711), (46, 457140), (57, 368920), (60, 350474), (69, 304760), (76, 276690), (92, 228570), (95, 221352), (114, 184460), (115, 182856), (120, 175237), (138, 152380), (152, 138345), (184, 114285), (190, 110676), (228, 92230), (230, 91428), (276, 76190), (285, 73784), (345, 60952), (380, 55338), (401, 52440), (437, 48120), (456, 46115), (460, 45714), (552, 38095), (570, 36892), (690, 30476), (760, 27669), (802, 26220), (874, 24060), (920, 22857), (1140, 18446), (1203, 17480), (1311, 16040), (1380, 15238), (1604, 13110), (1748, 12030), (2005, 10488), (2185, 9624), (2280, 9223), (2406, 8740), (2622, 8020), (2760, 7619), (3208, 6555), (3496, 6015), (4010, 5244), (4370, 4812)]