20909696

素因数分解:

$2^7\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:217

約数の個数: 64

約数和(自身を含む): 44431200

約数和(自身を除く): 23521504

約数列:

[1, 2, 4, 8, 16, 29, 32, 43, 58, 64, 86, 116, 128, 131, 172, 232, 262, 344, 464, 524, 688, 928, 1048, 1247, 1376, 1856, 2096, 2494, 2752, 3712, 3799, 4192, 4988, 5504, 5633, 7598, 8384, 9976, 11266, 15196, 16768, 19952, 22532, 30392, 39904, 45064, 60784, 79808, 90128, 121568, 159616, 163357, 180256, 243136, 326714, 360512, 486272, 653428, 721024, 1306856, 2613712, 5227424, 10454848, 20909696]

約数ペア:

[(1, 20909696), (2, 10454848), (4, 5227424), (8, 2613712), (16, 1306856), (29, 721024), (32, 653428), (43, 486272), (58, 360512), (64, 326714), (86, 243136), (116, 180256), (128, 163357), (131, 159616), (172, 121568), (232, 90128), (262, 79808), (344, 60784), (464, 45064), (524, 39904), (688, 30392), (928, 22532), (1048, 19952), (1247, 16768), (1376, 15196), (1856, 11266), (2096, 9976), (2494, 8384), (2752, 7598), (3712, 5633), (3799, 5504), (4192, 4988)]