21565809

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{2999}}^1$

素因数の和:3069

約数の個数: 24

約数和(自身を含む): 33696000

約数和(自身を除く): 12130191

約数列:

[1, 3, 9, 17, 47, 51, 141, 153, 423, 799, 2397, 2999, 7191, 8997, 26991, 50983, 140953, 152949, 422859, 458847, 1268577, 2396201, 7188603, 21565809]

約数ペア:

[(1, 21565809), (3, 7188603), (9, 2396201), (17, 1268577), (47, 458847), (51, 422859), (141, 152949), (153, 140953), (423, 50983), (799, 26991), (2397, 8997), (2999, 7191)]