20816384

素因数分解:

$2^9\times {\mathrm{109}}^1\times {\mathrm{373}}^1$

素因数の和:500

約数の個数: 40

約数和(自身を含む): 42086220

約数和(自身を除く): 21269836

約数列:

[1, 2, 4, 8, 16, 32, 64, 109, 128, 218, 256, 373, 436, 512, 746, 872, 1492, 1744, 2984, 3488, 5968, 6976, 11936, 13952, 23872, 27904, 40657, 47744, 55808, 81314, 95488, 162628, 190976, 325256, 650512, 1301024, 2602048, 5204096, 10408192, 20816384]

約数ペア:

[(1, 20816384), (2, 10408192), (4, 5204096), (8, 2602048), (16, 1301024), (32, 650512), (64, 325256), (109, 190976), (128, 162628), (218, 95488), (256, 81314), (373, 55808), (436, 47744), (512, 40657), (746, 27904), (872, 23872), (1492, 13952), (1744, 11936), (2984, 6976), (3488, 5968)]