20521728

素因数分解:

$2^8\times 3^3\times {\mathrm{2969}}^1$

素因数の和:2994

約数の個数: 72

約数和(自身を含む): 60706800

約数和(自身を除く): 40185072

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 64, 72, 96, 108, 128, 144, 192, 216, 256, 288, 384, 432, 576, 768, 864, 1152, 1728, 2304, 2969, 3456, 5938, 6912, 8907, 11876, 17814, 23752, 26721, 35628, 47504, 53442, 71256, 80163, 95008, 106884, 142512, 160326, 190016, 213768, 285024, 320652, 380032, 427536, 570048, 641304, 760064, 855072, 1140096, 1282608, 1710144, 2280192, 2565216, 3420288, 5130432, 6840576, 10260864, 20521728]

約数ペア:

[(1, 20521728), (2, 10260864), (3, 6840576), (4, 5130432), (6, 3420288), (8, 2565216), (9, 2280192), (12, 1710144), (16, 1282608), (18, 1140096), (24, 855072), (27, 760064), (32, 641304), (36, 570048), (48, 427536), (54, 380032), (64, 320652), (72, 285024), (96, 213768), (108, 190016), (128, 160326), (144, 142512), (192, 106884), (216, 95008), (256, 80163), (288, 71256), (384, 53442), (432, 47504), (576, 35628), (768, 26721), (864, 23752), (1152, 17814), (1728, 11876), (2304, 8907), (2969, 6912), (3456, 5938)]