20709488

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{971}}^1$

素因数の和:1053

約数の個数: 40

約数和(自身を含む): 42425856

約数和(自身を除く): 21716368

約数列:

[1, 2, 4, 8, 16, 31, 43, 62, 86, 124, 172, 248, 344, 496, 688, 971, 1333, 1942, 2666, 3884, 5332, 7768, 10664, 15536, 21328, 30101, 41753, 60202, 83506, 120404, 167012, 240808, 334024, 481616, 668048, 1294343, 2588686, 5177372, 10354744, 20709488]

約数ペア:

[(1, 20709488), (2, 10354744), (4, 5177372), (8, 2588686), (16, 1294343), (31, 668048), (43, 481616), (62, 334024), (86, 240808), (124, 167012), (172, 120404), (248, 83506), (344, 60202), (496, 41753), (688, 30101), (971, 21328), (1333, 15536), (1942, 10664), (2666, 7768), (3884, 5332)]