21252718521

素因数分解:

$3^6\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{15733}}^1$

素因数の和:15877

約数の個数: 56

約数和(自身を含む): 34050578760

約数和(自身を除く): 12797860239

約数列:

[1, 3, 9, 17, 27, 51, 81, 109, 153, 243, 327, 459, 729, 981, 1377, 1853, 2943, 4131, 5559, 8829, 12393, 15733, 16677, 26487, 47199, 50031, 79461, 141597, 150093, 267461, 424791, 450279, 802383, 1274373, 1350837, 1714897, 2407149, 3823119, 5144691, 7221447, 11469357, 15434073, 21664341, 29153249, 46302219, 64993023, 87459747, 138906657, 194979069, 262379241, 416719971, 787137723, 1250159913, 2361413169, 7084239507, 21252718521]

約数ペア:

[(1, 21252718521), (3, 7084239507), (9, 2361413169), (17, 1250159913), (27, 787137723), (51, 416719971), (81, 262379241), (109, 194979069), (153, 138906657), (243, 87459747), (327, 64993023), (459, 46302219), (729, 29153249), (981, 21664341), (1377, 15434073), (1853, 11469357), (2943, 7221447), (4131, 5144691), (5559, 3823119), (8829, 2407149), (12393, 1714897), (15733, 1350837), (16677, 1274373), (26487, 802383), (47199, 450279), (50031, 424791), (79461, 267461), (141597, 150093)]