20578048

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{2593}}^1$

素因数の和:2640

約数の個数: 36

約数和(自身を含む): 42417088

約数和(自身を除く): 21839040

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 992, 1984, 2593, 3968, 5186, 7936, 10372, 20744, 41488, 80383, 82976, 160766, 165952, 321532, 331904, 643064, 663808, 1286128, 2572256, 5144512, 10289024, 20578048]

約数ペア:

[(1, 20578048), (2, 10289024), (4, 5144512), (8, 2572256), (16, 1286128), (31, 663808), (32, 643064), (62, 331904), (64, 321532), (124, 165952), (128, 160766), (248, 82976), (256, 80383), (496, 41488), (992, 20744), (1984, 10372), (2593, 7936), (3968, 5186)]