208021025

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{8263}}^1$

素因数の和:8345

約数の個数: 24

約数和(自身を含む): 276678720

約数和(自身を除く): 68657695

約数列:

[1, 5, 19, 25, 53, 95, 265, 475, 1007, 1325, 5035, 8263, 25175, 41315, 156997, 206575, 437939, 784985, 2189695, 3924925, 8320841, 10948475, 41604205, 208021025]

約数ペア:

[(1, 208021025), (5, 41604205), (19, 10948475), (25, 8320841), (53, 3924925), (95, 2189695), (265, 784985), (475, 437939), (1007, 206575), (1325, 156997), (5035, 41315), (8263, 25175)]