87128720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{991}}^1$

素因数の和:1168

約数の個数: 80

約数和(自身を含む): 233223168

約数和(自身を除く): 146094448

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 157, 280, 314, 560, 628, 785, 991, 1099, 1256, 1570, 1982, 2198, 2512, 3140, 3964, 4396, 4955, 5495, 6280, 6937, 7928, 8792, 9910, 10990, 12560, 13874, 15856, 17584, 19820, 21980, 27748, 34685, 39640, 43960, 55496, 69370, 79280, 87920, 110992, 138740, 155587, 277480, 311174, 554960, 622348, 777935, 1089109, 1244696, 1555870, 2178218, 2489392, 3111740, 4356436, 5445545, 6223480, 8712872, 10891090, 12446960, 17425744, 21782180, 43564360, 87128720]

約数ペア:

[(1, 87128720), (2, 43564360), (4, 21782180), (5, 17425744), (7, 12446960), (8, 10891090), (10, 8712872), (14, 6223480), (16, 5445545), (20, 4356436), (28, 3111740), (35, 2489392), (40, 2178218), (56, 1555870), (70, 1244696), (80, 1089109), (112, 777935), (140, 622348), (157, 554960), (280, 311174), (314, 277480), (560, 155587), (628, 138740), (785, 110992), (991, 87920), (1099, 79280), (1256, 69370), (1570, 55496), (1982, 43960), (2198, 39640), (2512, 34685), (3140, 27748), (3964, 21980), (4396, 19820), (4955, 17584), (5495, 15856), (6280, 13874), (6937, 12560), (7928, 10990), (8792, 9910)]