20970015

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6689}}^1$

素因数の和:6727

約数の個数: 32

約数和(自身を含む): 38534400

約数和(自身を除く): 17564385

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 95, 165, 209, 285, 627, 1045, 3135, 6689, 20067, 33445, 73579, 100335, 127091, 220737, 367895, 381273, 635455, 1103685, 1398001, 1906365, 4194003, 6990005, 20970015]

約数ペア:

[(1, 20970015), (3, 6990005), (5, 4194003), (11, 1906365), (15, 1398001), (19, 1103685), (33, 635455), (55, 381273), (57, 367895), (95, 220737), (165, 127091), (209, 100335), (285, 73579), (627, 33445), (1045, 20067), (3135, 6689)]