20015616

素因数分解:

$2^9\times 3^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1$

素因数の和:261

約数の個数: 80

約数和(自身を含む): 54309024

約数和(自身を除く): 34293408

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 83, 96, 128, 157, 166, 192, 249, 256, 314, 332, 384, 471, 498, 512, 628, 664, 768, 942, 996, 1256, 1328, 1536, 1884, 1992, 2512, 2656, 3768, 3984, 5024, 5312, 7536, 7968, 10048, 10624, 13031, 15072, 15936, 20096, 21248, 26062, 30144, 31872, 39093, 40192, 42496, 52124, 60288, 63744, 78186, 80384, 104248, 120576, 127488, 156372, 208496, 241152, 312744, 416992, 625488, 833984, 1250976, 1667968, 2501952, 3335936, 5003904, 6671872, 10007808, 20015616]

約数ペア:

[(1, 20015616), (2, 10007808), (3, 6671872), (4, 5003904), (6, 3335936), (8, 2501952), (12, 1667968), (16, 1250976), (24, 833984), (32, 625488), (48, 416992), (64, 312744), (83, 241152), (96, 208496), (128, 156372), (157, 127488), (166, 120576), (192, 104248), (249, 80384), (256, 78186), (314, 63744), (332, 60288), (384, 52124), (471, 42496), (498, 40192), (512, 39093), (628, 31872), (664, 30144), (768, 26062), (942, 21248), (996, 20096), (1256, 15936), (1328, 15072), (1536, 13031), (1884, 10624), (1992, 10048), (2512, 7968), (2656, 7536), (3768, 5312), (3984, 5024)]