21039975

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{8501}}^1$

素因数の和:8528

約数の個数: 36

約数和(自身を含む): 41115672

約数和(自身を除く): 20075697

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825, 2475, 8501, 25503, 42505, 76509, 93511, 127515, 212525, 280533, 382545, 467555, 637575, 841599, 1402665, 1912725, 2337775, 4207995, 7013325, 21039975]

約数ペア:

[(1, 21039975), (3, 7013325), (5, 4207995), (9, 2337775), (11, 1912725), (15, 1402665), (25, 841599), (33, 637575), (45, 467555), (55, 382545), (75, 280533), (99, 212525), (165, 127515), (225, 93511), (275, 76509), (495, 42505), (825, 25503), (2475, 8501)]