81180720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{823}}^1$

素因数の和:979

約数の個数: 120

約数和(自身を含む): 274955616

約数和(自身を除く): 193774896

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 137, 144, 180, 240, 274, 360, 411, 548, 685, 720, 822, 823, 1096, 1233, 1370, 1644, 1646, 2055, 2192, 2466, 2469, 2740, 3288, 3292, 4110, 4115, 4932, 4938, 5480, 6165, 6576, 6584, 7407, 8220, 8230, 9864, 9876, 10960, 12330, 12345, 13168, 14814, 16440, 16460, 19728, 19752, 24660, 24690, 29628, 32880, 32920, 37035, 39504, 49320, 49380, 59256, 65840, 74070, 98640, 98760, 112751, 118512, 148140, 197520, 225502, 296280, 338253, 451004, 563755, 592560, 676506, 902008, 1014759, 1127510, 1353012, 1691265, 1804016, 2029518, 2255020, 2706024, 3382530, 4059036, 4510040, 5073795, 5412048, 6765060, 8118072, 9020080, 10147590, 13530120, 16236144, 20295180, 27060240, 40590360, 81180720]

約数ペア:

[(1, 81180720), (2, 40590360), (3, 27060240), (4, 20295180), (5, 16236144), (6, 13530120), (8, 10147590), (9, 9020080), (10, 8118072), (12, 6765060), (15, 5412048), (16, 5073795), (18, 4510040), (20, 4059036), (24, 3382530), (30, 2706024), (36, 2255020), (40, 2029518), (45, 1804016), (48, 1691265), (60, 1353012), (72, 1127510), (80, 1014759), (90, 902008), (120, 676506), (137, 592560), (144, 563755), (180, 451004), (240, 338253), (274, 296280), (360, 225502), (411, 197520), (548, 148140), (685, 118512), (720, 112751), (822, 98760), (823, 98640), (1096, 74070), (1233, 65840), (1370, 59256), (1644, 49380), (1646, 49320), (2055, 39504), (2192, 37035), (2466, 32920), (2469, 32880), (2740, 29628), (3288, 24690), (3292, 24660), (4110, 19752), (4115, 19728), (4932, 16460), (4938, 16440), (5480, 14814), (6165, 13168), (6576, 12345), (6584, 12330), (7407, 10960), (8220, 9876), (8230, 9864)]