21663423

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{433}}^1$

素因数の和:568

約数の個数: 32

約数和(自身を含む): 34372800

約数和(自身を除く): 12709377

約数列:

[1, 3, 9, 17, 27, 51, 109, 153, 327, 433, 459, 981, 1299, 1853, 2943, 3897, 5559, 7361, 11691, 16677, 22083, 47197, 50031, 66249, 141591, 198747, 424773, 802349, 1274319, 2407047, 7221141, 21663423]

約数ペア:

[(1, 21663423), (3, 7221141), (9, 2407047), (17, 1274319), (27, 802349), (51, 424773), (109, 198747), (153, 141591), (327, 66249), (433, 50031), (459, 47197), (981, 22083), (1299, 16677), (1853, 11691), (2943, 7361), (3897, 5559)]