20437431

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{907}}^1$

素因数の和:983

約数の個数: 32

約数和(自身を含む): 33123840

約数和(自身を除く): 12686409

約数列:

[1, 3, 7, 21, 29, 37, 87, 111, 203, 259, 609, 777, 907, 1073, 2721, 3219, 6349, 7511, 19047, 22533, 26303, 33559, 78909, 100677, 184121, 234913, 552363, 704739, 973211, 2919633, 6812477, 20437431]

約数ペア:

[(1, 20437431), (3, 6812477), (7, 2919633), (21, 973211), (29, 704739), (37, 552363), (87, 234913), (111, 184121), (203, 100677), (259, 78909), (609, 33559), (777, 26303), (907, 22533), (1073, 19047), (2721, 7511), (3219, 6349)]