20690649

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19319}}^1$

素因数の和:19349

約数の個数: 24

約数和(自身を含む): 36167040

約数和(自身を除く): 15476391

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19319, 57957, 135233, 173871, 328423, 405699, 985269, 1217097, 2298961, 2955807, 6896883, 20690649]

約数ペア:

[(1, 20690649), (3, 6896883), (7, 2955807), (9, 2298961), (17, 1217097), (21, 985269), (51, 405699), (63, 328423), (119, 173871), (153, 135233), (357, 57957), (1071, 19319)]