320417680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{419}}^1$

素因数の和:533

約数の個数: 120

約数和(自身を含む): 831196800

約数和(自身を除く): 510779120

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 79, 80, 88, 110, 121, 158, 176, 220, 242, 316, 395, 419, 440, 484, 605, 632, 790, 838, 869, 880, 968, 1210, 1264, 1580, 1676, 1738, 1936, 2095, 2420, 3160, 3352, 3476, 4190, 4345, 4609, 4840, 6320, 6704, 6952, 8380, 8690, 9218, 9559, 9680, 13904, 16760, 17380, 18436, 19118, 23045, 33101, 33520, 34760, 36872, 38236, 46090, 47795, 50699, 66202, 69520, 73744, 76472, 92180, 95590, 101398, 132404, 152944, 165505, 184360, 191180, 202796, 253495, 264808, 331010, 364111, 368720, 382360, 405592, 506990, 529616, 662020, 728222, 764720, 811184, 1013980, 1324040, 1456444, 1820555, 2027960, 2648080, 2912888, 3641110, 4005221, 4055920, 5825776, 7282220, 8010442, 14564440, 16020884, 20026105, 29128880, 32041768, 40052210, 64083536, 80104420, 160208840, 320417680]

約数ペア:

[(1, 320417680), (2, 160208840), (4, 80104420), (5, 64083536), (8, 40052210), (10, 32041768), (11, 29128880), (16, 20026105), (20, 16020884), (22, 14564440), (40, 8010442), (44, 7282220), (55, 5825776), (79, 4055920), (80, 4005221), (88, 3641110), (110, 2912888), (121, 2648080), (158, 2027960), (176, 1820555), (220, 1456444), (242, 1324040), (316, 1013980), (395, 811184), (419, 764720), (440, 728222), (484, 662020), (605, 529616), (632, 506990), (790, 405592), (838, 382360), (869, 368720), (880, 364111), (968, 331010), (1210, 264808), (1264, 253495), (1580, 202796), (1676, 191180), (1738, 184360), (1936, 165505), (2095, 152944), (2420, 132404), (3160, 101398), (3352, 95590), (3476, 92180), (4190, 76472), (4345, 73744), (4609, 69520), (4840, 66202), (6320, 50699), (6704, 47795), (6952, 46090), (8380, 38236), (8690, 36872), (9218, 34760), (9559, 33520), (9680, 33101), (13904, 23045), (16760, 19118), (17380, 18436)]