65131520

素因数分解:

$2^{10}\times 5^1\times {\mathrm{12721}}^1$

素因数の和:12746

約数の個数: 44

約数和(自身を含む): 156251604

約数和(自身を除く): 91120084

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, 12721, 25442, 50884, 63605, 101768, 127210, 203536, 254420, 407072, 508840, 814144, 1017680, 1628288, 2035360, 3256576, 4070720, 6513152, 8141440, 13026304, 16282880, 32565760, 65131520]

約数ペア:

[(1, 65131520), (2, 32565760), (4, 16282880), (5, 13026304), (8, 8141440), (10, 6513152), (16, 4070720), (20, 3256576), (32, 2035360), (40, 1628288), (64, 1017680), (80, 814144), (128, 508840), (160, 407072), (256, 254420), (320, 203536), (512, 127210), (640, 101768), (1024, 63605), (1280, 50884), (2560, 25442), (5120, 12721)]