20512338721

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1\times {\mathrm{397981}}^1$

素因数の和:398224

約数の個数: 16

約数和(自身を含む): 24197305600

約数和(自身を除く): 3684966879

約数列:

[1, 7, 37, 199, 259, 1393, 7363, 51541, 397981, 2785867, 14725297, 79198219, 103077079, 554387533, 2930334103, 20512338721]

約数ペア:

[(1, 20512338721), (7, 2930334103), (37, 554387533), (199, 103077079), (259, 79198219), (1393, 14725297), (7363, 2785867), (51541, 397981)]