21204800

素因数分解:

$2^6\times 5^2\times {\mathrm{29}}^1\times {\mathrm{457}}^1$

素因数の和:508

約数の個数: 84

約数和(自身を含む): 54094380

約数和(自身を除く): 32889580

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 32, 40, 50, 58, 64, 80, 100, 116, 145, 160, 200, 232, 290, 320, 400, 457, 464, 580, 725, 800, 914, 928, 1160, 1450, 1600, 1828, 1856, 2285, 2320, 2900, 3656, 4570, 4640, 5800, 7312, 9140, 9280, 11425, 11600, 13253, 14624, 18280, 22850, 23200, 26506, 29248, 36560, 45700, 46400, 53012, 66265, 73120, 91400, 106024, 132530, 146240, 182800, 212048, 265060, 331325, 365600, 424096, 530120, 662650, 731200, 848192, 1060240, 1325300, 2120480, 2650600, 4240960, 5301200, 10602400, 21204800]

約数ペア:

[(1, 21204800), (2, 10602400), (4, 5301200), (5, 4240960), (8, 2650600), (10, 2120480), (16, 1325300), (20, 1060240), (25, 848192), (29, 731200), (32, 662650), (40, 530120), (50, 424096), (58, 365600), (64, 331325), (80, 265060), (100, 212048), (116, 182800), (145, 146240), (160, 132530), (200, 106024), (232, 91400), (290, 73120), (320, 66265), (400, 53012), (457, 46400), (464, 45700), (580, 36560), (725, 29248), (800, 26506), (914, 23200), (928, 22850), (1160, 18280), (1450, 14624), (1600, 13253), (1828, 11600), (1856, 11425), (2285, 9280), (2320, 9140), (2900, 7312), (3656, 5800), (4570, 4640)]