20257895

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{743}}^1$

素因数の和:815

約数の個数: 32

約数和(自身を含む): 29998080

約数和(自身を除く): 9740185

約数列:

[1, 5, 7, 19, 35, 41, 95, 133, 205, 287, 665, 743, 779, 1435, 3715, 3895, 5201, 5453, 14117, 26005, 27265, 30463, 70585, 98819, 152315, 213241, 494095, 578797, 1066205, 2893985, 4051579, 20257895]

約数ペア:

[(1, 20257895), (5, 4051579), (7, 2893985), (19, 1066205), (35, 578797), (41, 494095), (95, 213241), (133, 152315), (205, 98819), (287, 70585), (665, 30463), (743, 27265), (779, 26005), (1435, 14117), (3715, 5453), (3895, 5201)]