81295920

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{617}}^1$

素因数の和:700

約数の個数: 160

約数和(自身を含む): 285071040

約数和(自身を除く): 203775120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 61, 72, 80, 90, 108, 120, 122, 135, 144, 180, 183, 216, 240, 244, 270, 305, 360, 366, 432, 488, 540, 549, 610, 617, 720, 732, 915, 976, 1080, 1098, 1220, 1234, 1464, 1647, 1830, 1851, 2160, 2196, 2440, 2468, 2745, 2928, 3085, 3294, 3660, 3702, 4392, 4880, 4936, 5490, 5553, 6170, 6588, 7320, 7404, 8235, 8784, 9255, 9872, 10980, 11106, 12340, 13176, 14640, 14808, 16470, 16659, 18510, 21960, 22212, 24680, 26352, 27765, 29616, 32940, 33318, 37020, 37637, 43920, 44424, 49360, 55530, 65880, 66636, 74040, 75274, 83295, 88848, 111060, 112911, 131760, 133272, 148080, 150548, 166590, 188185, 222120, 225822, 266544, 301096, 333180, 338733, 376370, 444240, 451644, 564555, 602192, 666360, 677466, 752740, 903288, 1016199, 1129110, 1332720, 1354932, 1505480, 1693665, 1806576, 2032398, 2258220, 2709864, 3010960, 3387330, 4064796, 4516440, 5080995, 5419728, 6774660, 8129592, 9032880, 10161990, 13549320, 16259184, 20323980, 27098640, 40647960, 81295920]

約数ペア:

[(1, 81295920), (2, 40647960), (3, 27098640), (4, 20323980), (5, 16259184), (6, 13549320), (8, 10161990), (9, 9032880), (10, 8129592), (12, 6774660), (15, 5419728), (16, 5080995), (18, 4516440), (20, 4064796), (24, 3387330), (27, 3010960), (30, 2709864), (36, 2258220), (40, 2032398), (45, 1806576), (48, 1693665), (54, 1505480), (60, 1354932), (61, 1332720), (72, 1129110), (80, 1016199), (90, 903288), (108, 752740), (120, 677466), (122, 666360), (135, 602192), (144, 564555), (180, 451644), (183, 444240), (216, 376370), (240, 338733), (244, 333180), (270, 301096), (305, 266544), (360, 225822), (366, 222120), (432, 188185), (488, 166590), (540, 150548), (549, 148080), (610, 133272), (617, 131760), (720, 112911), (732, 111060), (915, 88848), (976, 83295), (1080, 75274), (1098, 74040), (1220, 66636), (1234, 65880), (1464, 55530), (1647, 49360), (1830, 44424), (1851, 43920), (2160, 37637), (2196, 37020), (2440, 33318), (2468, 32940), (2745, 29616), (2928, 27765), (3085, 26352), (3294, 24680), (3660, 22212), (3702, 21960), (4392, 18510), (4880, 16659), (4936, 16470), (5490, 14808), (5553, 14640), (6170, 13176), (6588, 12340), (7320, 11106), (7404, 10980), (8235, 9872), (8784, 9255)]