19878219

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{751}}^1$

素因数の和:947

約数の個数: 24

約数和(自身を含む): 30618432

約数和(自身を除く): 10740213

約数列:

[1, 3, 9, 17, 51, 153, 173, 519, 751, 1557, 2253, 2941, 6759, 8823, 12767, 26469, 38301, 114903, 129923, 389769, 1169307, 2208691, 6626073, 19878219]

約数ペア:

[(1, 19878219), (3, 6626073), (9, 2208691), (17, 1169307), (51, 389769), (153, 129923), (173, 114903), (519, 38301), (751, 26469), (1557, 12767), (2253, 8823), (2941, 6759)]