319457920

素因数分解:

$2^7\times 5^1\times {\mathrm{617}}^1\times {\mathrm{809}}^1$

素因数の和:1445

約数の個数: 64

約数和(自身を含む): 765887400

約数和(自身を除く): 446429480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 617, 640, 809, 1234, 1618, 2468, 3085, 3236, 4045, 4936, 6170, 6472, 8090, 9872, 12340, 12944, 16180, 19744, 24680, 25888, 32360, 39488, 49360, 51776, 64720, 78976, 98720, 103552, 129440, 197440, 258880, 394880, 499153, 517760, 998306, 1996612, 2495765, 3993224, 4991530, 7986448, 9983060, 15972896, 19966120, 31945792, 39932240, 63891584, 79864480, 159728960, 319457920]

約数ペア:

[(1, 319457920), (2, 159728960), (4, 79864480), (5, 63891584), (8, 39932240), (10, 31945792), (16, 19966120), (20, 15972896), (32, 9983060), (40, 7986448), (64, 4991530), (80, 3993224), (128, 2495765), (160, 1996612), (320, 998306), (617, 517760), (640, 499153), (809, 394880), (1234, 258880), (1618, 197440), (2468, 129440), (3085, 103552), (3236, 98720), (4045, 78976), (4936, 64720), (6170, 51776), (6472, 49360), (8090, 39488), (9872, 32360), (12340, 25888), (12944, 24680), (16180, 19744)]