77888440

素因数分解:

$2^3\times 5^1\times 7^4\times {\mathrm{811}}^1$

素因数の和:850

約数の個数: 80

約数和(自身を含む): 204697080

約数和(自身を除く): 126808640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 686, 811, 980, 1372, 1622, 1715, 1960, 2401, 2744, 3244, 3430, 4055, 4802, 5677, 6488, 6860, 8110, 9604, 11354, 12005, 13720, 16220, 19208, 22708, 24010, 28385, 32440, 39739, 45416, 48020, 56770, 79478, 96040, 113540, 158956, 198695, 227080, 278173, 317912, 397390, 556346, 794780, 1112692, 1390865, 1589560, 1947211, 2225384, 2781730, 3894422, 5563460, 7788844, 9736055, 11126920, 15577688, 19472110, 38944220, 77888440]

約数ペア:

[(1, 77888440), (2, 38944220), (4, 19472110), (5, 15577688), (7, 11126920), (8, 9736055), (10, 7788844), (14, 5563460), (20, 3894422), (28, 2781730), (35, 2225384), (40, 1947211), (49, 1589560), (56, 1390865), (70, 1112692), (98, 794780), (140, 556346), (196, 397390), (245, 317912), (280, 278173), (343, 227080), (392, 198695), (490, 158956), (686, 113540), (811, 96040), (980, 79478), (1372, 56770), (1622, 48020), (1715, 45416), (1960, 39739), (2401, 32440), (2744, 28385), (3244, 24010), (3430, 22708), (4055, 19208), (4802, 16220), (5677, 13720), (6488, 12005), (6860, 11354), (8110, 9604)]