81564840

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{10789}}^1$

素因数の和:10816

約数の個数: 128

約数和(自身を含む): 310752000

約数和(自身を除く): 229187160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 3780, 7560, 10789, 21578, 32367, 43156, 53945, 64734, 75523, 86312, 97101, 107890, 129468, 151046, 161835, 194202, 215780, 226569, 258936, 291303, 302092, 323670, 377615, 388404, 431560, 453138, 485505, 582606, 604184, 647340, 679707, 755230, 776808, 906276, 971010, 1132845, 1165212, 1294680, 1359414, 1456515, 1510460, 1812552, 1942020, 2039121, 2265690, 2330424, 2718828, 2913030, 3020920, 3398535, 3884040, 4078242, 4531380, 5437656, 5826060, 6797070, 8156484, 9062760, 10195605, 11652120, 13594140, 16312968, 20391210, 27188280, 40782420, 81564840]

約数ペア:

[(1, 81564840), (2, 40782420), (3, 27188280), (4, 20391210), (5, 16312968), (6, 13594140), (7, 11652120), (8, 10195605), (9, 9062760), (10, 8156484), (12, 6797070), (14, 5826060), (15, 5437656), (18, 4531380), (20, 4078242), (21, 3884040), (24, 3398535), (27, 3020920), (28, 2913030), (30, 2718828), (35, 2330424), (36, 2265690), (40, 2039121), (42, 1942020), (45, 1812552), (54, 1510460), (56, 1456515), (60, 1359414), (63, 1294680), (70, 1165212), (72, 1132845), (84, 971010), (90, 906276), (105, 776808), (108, 755230), (120, 679707), (126, 647340), (135, 604184), (140, 582606), (168, 485505), (180, 453138), (189, 431560), (210, 388404), (216, 377615), (252, 323670), (270, 302092), (280, 291303), (315, 258936), (360, 226569), (378, 215780), (420, 194202), (504, 161835), (540, 151046), (630, 129468), (756, 107890), (840, 97101), (945, 86312), (1080, 75523), (1260, 64734), (1512, 53945), (1890, 43156), (2520, 32367), (3780, 21578), (7560, 10789)]