28808960

素因数分解:

$2^8\times 5^1\times {\mathrm{71}}^1\times {\mathrm{317}}^1$

素因数の和:409

約数の個数: 72

約数和(自身を含む): 70199136

約数和(自身を除く): 41390176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 128, 142, 160, 256, 284, 317, 320, 355, 568, 634, 640, 710, 1136, 1268, 1280, 1420, 1585, 2272, 2536, 2840, 3170, 4544, 5072, 5680, 6340, 9088, 10144, 11360, 12680, 18176, 20288, 22507, 22720, 25360, 40576, 45014, 45440, 50720, 81152, 90028, 90880, 101440, 112535, 180056, 202880, 225070, 360112, 405760, 450140, 720224, 900280, 1440448, 1800560, 2880896, 3601120, 5761792, 7202240, 14404480, 28808960]

約数ペア:

[(1, 28808960), (2, 14404480), (4, 7202240), (5, 5761792), (8, 3601120), (10, 2880896), (16, 1800560), (20, 1440448), (32, 900280), (40, 720224), (64, 450140), (71, 405760), (80, 360112), (128, 225070), (142, 202880), (160, 180056), (256, 112535), (284, 101440), (317, 90880), (320, 90028), (355, 81152), (568, 50720), (634, 45440), (640, 45014), (710, 40576), (1136, 25360), (1268, 22720), (1280, 22507), (1420, 20288), (1585, 18176), (2272, 12680), (2536, 11360), (2840, 10144), (3170, 9088), (4544, 6340), (5072, 5680)]