20987712

素因数分解:

$2^6\times 3^2\times {\mathrm{83}}^1\times {\mathrm{439}}^1$

素因数の和:540

約数の個数: 84

約数和(自身を含む): 61020960

約数和(自身を除く): 40033248

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 64, 72, 83, 96, 144, 166, 192, 249, 288, 332, 439, 498, 576, 664, 747, 878, 996, 1317, 1328, 1494, 1756, 1992, 2634, 2656, 2988, 3512, 3951, 3984, 5268, 5312, 5976, 7024, 7902, 7968, 10536, 11952, 14048, 15804, 15936, 21072, 23904, 28096, 31608, 36437, 42144, 47808, 63216, 72874, 84288, 109311, 126432, 145748, 218622, 252864, 291496, 327933, 437244, 582992, 655866, 874488, 1165984, 1311732, 1748976, 2331968, 2623464, 3497952, 5246928, 6995904, 10493856, 20987712]

約数ペア:

[(1, 20987712), (2, 10493856), (3, 6995904), (4, 5246928), (6, 3497952), (8, 2623464), (9, 2331968), (12, 1748976), (16, 1311732), (18, 1165984), (24, 874488), (32, 655866), (36, 582992), (48, 437244), (64, 327933), (72, 291496), (83, 252864), (96, 218622), (144, 145748), (166, 126432), (192, 109311), (249, 84288), (288, 72874), (332, 63216), (439, 47808), (498, 42144), (576, 36437), (664, 31608), (747, 28096), (878, 23904), (996, 21072), (1317, 15936), (1328, 15804), (1494, 14048), (1756, 11952), (1992, 10536), (2634, 7968), (2656, 7902), (2988, 7024), (3512, 5976), (3951, 5312), (3984, 5268)]