56756421

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{21821}}^1$

素因数の和:21861

約数の個数: 18

約数和(自身を含む): 87091602

約数和(自身を除く): 30335181

約数列:

[1, 3, 9, 17, 51, 153, 289, 867, 2601, 21821, 65463, 196389, 370957, 1112871, 3338613, 6306269, 18918807, 56756421]

約数ペア:

[(1, 56756421), (3, 18918807), (9, 6306269), (17, 3338613), (51, 1112871), (153, 370957), (289, 196389), (867, 65463), (2601, 21821)]