128619520

素因数分解:

$2^{10}\times 5^1\times {\mathrm{25121}}^1$

素因数の和:25146

約数の個数: 44

約数和(自身を含む): 308548404

約数和(自身を除く): 179928884

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 25121, 50242, 100484, 125605, 200968, 251210, 401936, 502420, 803872, 1004840, 1607744, 2009680, 3215488, 4019360, 6430976, 8038720, 12861952, 16077440, 25723904, 32154880, 64309760, 128619520]

約数ペア:

[(1, 128619520), (2, 64309760), (4, 32154880), (5, 25723904), (8, 16077440), (10, 12861952), (16, 8038720), (20, 6430976), (32, 4019360), (40, 3215488), (64, 2009680), (80, 1607744), (128, 1004840), (160, 803872), (256, 502420), (320, 401936), (512, 251210), (640, 200968), (1024, 125605), (1280, 100484), (2560, 50242), (5120, 25121)]