19980086220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{823}}^1\times {\mathrm{134873}}^1$

素因数の和:135711

約数の個数: 72

約数和(自身を含む): 60680352096

約数和(自身を除く): 40700265876

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 823, 1646, 2469, 3292, 4115, 4938, 7407, 8230, 9876, 12345, 14814, 16460, 24690, 29628, 37035, 49380, 74070, 134873, 148140, 269746, 404619, 539492, 674365, 809238, 1213857, 1348730, 1618476, 2023095, 2427714, 2697460, 4046190, 4855428, 6069285, 8092380, 12138570, 24277140, 111000479, 222000958, 333001437, 444001916, 555002395, 666002874, 999004311, 1110004790, 1332005748, 1665007185, 1998008622, 2220009580, 3330014370, 3996017244, 4995021555, 6660028740, 9990043110, 19980086220]

約数ペア:

[(1, 19980086220), (2, 9990043110), (3, 6660028740), (4, 4995021555), (5, 3996017244), (6, 3330014370), (9, 2220009580), (10, 1998008622), (12, 1665007185), (15, 1332005748), (18, 1110004790), (20, 999004311), (30, 666002874), (36, 555002395), (45, 444001916), (60, 333001437), (90, 222000958), (180, 111000479), (823, 24277140), (1646, 12138570), (2469, 8092380), (3292, 6069285), (4115, 4855428), (4938, 4046190), (7407, 2697460), (8230, 2427714), (9876, 2023095), (12345, 1618476), (14814, 1348730), (16460, 1213857), (24690, 809238), (29628, 674365), (37035, 539492), (49380, 404619), (74070, 269746), (134873, 148140)]