72428800

素因数分解:

$2^8\times 5^2\times {\mathrm{11317}}^1$

素因数の和:11343

約数の個数: 54

約数和(自身を含む): 179288438

約数和(自身を除く): 106859638

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3200, 6400, 11317, 22634, 45268, 56585, 90536, 113170, 181072, 226340, 282925, 362144, 452680, 565850, 724288, 905360, 1131700, 1448576, 1810720, 2263400, 2897152, 3621440, 4526800, 7242880, 9053600, 14485760, 18107200, 36214400, 72428800]

約数ペア:

[(1, 72428800), (2, 36214400), (4, 18107200), (5, 14485760), (8, 9053600), (10, 7242880), (16, 4526800), (20, 3621440), (25, 2897152), (32, 2263400), (40, 1810720), (50, 1448576), (64, 1131700), (80, 905360), (100, 724288), (128, 565850), (160, 452680), (200, 362144), (256, 282925), (320, 226340), (400, 181072), (640, 113170), (800, 90536), (1280, 56585), (1600, 45268), (3200, 22634), (6400, 11317)]