128639520

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{569}}^1$

素因数の和:747

約数の個数: 144

約数和(自身を含む): 442554840

約数和(自身を除く): 313915320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 157, 160, 180, 240, 288, 314, 360, 471, 480, 569, 628, 720, 785, 942, 1138, 1256, 1413, 1440, 1570, 1707, 1884, 2276, 2355, 2512, 2826, 2845, 3140, 3414, 3768, 4552, 4710, 5024, 5121, 5652, 5690, 6280, 6828, 7065, 7536, 8535, 9104, 9420, 10242, 11304, 11380, 12560, 13656, 14130, 15072, 17070, 18208, 18840, 20484, 22608, 22760, 25120, 25605, 27312, 28260, 34140, 37680, 40968, 45216, 45520, 51210, 54624, 56520, 68280, 75360, 81936, 89333, 91040, 102420, 113040, 136560, 163872, 178666, 204840, 226080, 267999, 273120, 357332, 409680, 446665, 535998, 714664, 803997, 819360, 893330, 1071996, 1339995, 1429328, 1607994, 1786660, 2143992, 2679990, 2858656, 3215988, 3573320, 4019985, 4287984, 5359980, 6431976, 7146640, 8039970, 8575968, 10719960, 12863952, 14293280, 16079940, 21439920, 25727904, 32159880, 42879840, 64319760, 128639520]

約数ペア:

[(1, 128639520), (2, 64319760), (3, 42879840), (4, 32159880), (5, 25727904), (6, 21439920), (8, 16079940), (9, 14293280), (10, 12863952), (12, 10719960), (15, 8575968), (16, 8039970), (18, 7146640), (20, 6431976), (24, 5359980), (30, 4287984), (32, 4019985), (36, 3573320), (40, 3215988), (45, 2858656), (48, 2679990), (60, 2143992), (72, 1786660), (80, 1607994), (90, 1429328), (96, 1339995), (120, 1071996), (144, 893330), (157, 819360), (160, 803997), (180, 714664), (240, 535998), (288, 446665), (314, 409680), (360, 357332), (471, 273120), (480, 267999), (569, 226080), (628, 204840), (720, 178666), (785, 163872), (942, 136560), (1138, 113040), (1256, 102420), (1413, 91040), (1440, 89333), (1570, 81936), (1707, 75360), (1884, 68280), (2276, 56520), (2355, 54624), (2512, 51210), (2826, 45520), (2845, 45216), (3140, 40968), (3414, 37680), (3768, 34140), (4552, 28260), (4710, 27312), (5024, 25605), (5121, 25120), (5652, 22760), (5690, 22608), (6280, 20484), (6828, 18840), (7065, 18208), (7536, 17070), (8535, 15072), (9104, 14130), (9420, 13656), (10242, 12560), (11304, 11380)]