491580286

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1\times {\mathrm{401}}^1$

素因数の和:660

約数の個数: 32

約数和(自身を含む): 765858240

約数和(自身を除く): 274277954

約数列:

[1, 2, 71, 89, 97, 142, 178, 194, 401, 802, 6319, 6887, 8633, 12638, 13774, 17266, 28471, 35689, 38897, 56942, 71378, 77794, 612943, 1225886, 2533919, 2761687, 3461833, 5067838, 5523374, 6923666, 245790143, 491580286]

約数ペア:

[(1, 491580286), (2, 245790143), (71, 6923666), (89, 5523374), (97, 5067838), (142, 3461833), (178, 2761687), (194, 2533919), (401, 1225886), (802, 612943), (6319, 77794), (6887, 71378), (8633, 56942), (12638, 38897), (13774, 35689), (17266, 28471)]