311887520

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{991}}^1$

素因数の和:1294

約数の個数: 96

約数和(自身を含む): 845945856

約数和(自身を除く): 534058336

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 281, 560, 562, 991, 1120, 1124, 1405, 1967, 1982, 2248, 2810, 3934, 3964, 4496, 4955, 5620, 6937, 7868, 7928, 8992, 9835, 9910, 11240, 13874, 15736, 15856, 19670, 19820, 22480, 27748, 31472, 31712, 34685, 39340, 39640, 44960, 55496, 62944, 69370, 78680, 79280, 110992, 138740, 157360, 158560, 221984, 277480, 278471, 314720, 554960, 556942, 1109920, 1113884, 1392355, 1949297, 2227768, 2784710, 3898594, 4455536, 5569420, 7797188, 8911072, 9746485, 11138840, 15594376, 19492970, 22277680, 31188752, 38985940, 44555360, 62377504, 77971880, 155943760, 311887520]

約数ペア:

[(1, 311887520), (2, 155943760), (4, 77971880), (5, 62377504), (7, 44555360), (8, 38985940), (10, 31188752), (14, 22277680), (16, 19492970), (20, 15594376), (28, 11138840), (32, 9746485), (35, 8911072), (40, 7797188), (56, 5569420), (70, 4455536), (80, 3898594), (112, 2784710), (140, 2227768), (160, 1949297), (224, 1392355), (280, 1113884), (281, 1109920), (560, 556942), (562, 554960), (991, 314720), (1120, 278471), (1124, 277480), (1405, 221984), (1967, 158560), (1982, 157360), (2248, 138740), (2810, 110992), (3934, 79280), (3964, 78680), (4496, 69370), (4955, 62944), (5620, 55496), (6937, 44960), (7868, 39640), (7928, 39340), (8992, 34685), (9835, 31712), (9910, 31472), (11240, 27748), (13874, 22480), (15736, 19820), (15856, 19670)]