78876800

素因数分解:

$2^7\times 5^2\times {\mathrm{157}}^2$

素因数の和:338

約数の個数: 72

約数和(自身を含む): 196099335

約数和(自身を除く): 117222535

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 157, 160, 200, 314, 320, 400, 628, 640, 785, 800, 1256, 1570, 1600, 2512, 3140, 3200, 3925, 5024, 6280, 7850, 10048, 12560, 15700, 20096, 24649, 25120, 31400, 49298, 50240, 62800, 98596, 100480, 123245, 125600, 197192, 246490, 251200, 394384, 492980, 502400, 616225, 788768, 985960, 1232450, 1577536, 1971920, 2464900, 3155072, 3943840, 4929800, 7887680, 9859600, 15775360, 19719200, 39438400, 78876800]

約数ペア:

[(1, 78876800), (2, 39438400), (4, 19719200), (5, 15775360), (8, 9859600), (10, 7887680), (16, 4929800), (20, 3943840), (25, 3155072), (32, 2464900), (40, 1971920), (50, 1577536), (64, 1232450), (80, 985960), (100, 788768), (128, 616225), (157, 502400), (160, 492980), (200, 394384), (314, 251200), (320, 246490), (400, 197192), (628, 125600), (640, 123245), (785, 100480), (800, 98596), (1256, 62800), (1570, 50240), (1600, 49298), (2512, 31400), (3140, 25120), (3200, 24649), (3925, 20096), (5024, 15700), (6280, 12560), (7850, 10048)]