21782763

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{5273}}^1$

素因数の和:5305

約数の個数: 24

約数和(自身を含む): 34555248

約数和(自身を除く): 12772485

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 243, 459, 1377, 4131, 5273, 15819, 47457, 89641, 142371, 268923, 427113, 806769, 1281339, 2420307, 7260921, 21782763]

約数ペア:

[(1, 21782763), (3, 7260921), (9, 2420307), (17, 1281339), (27, 806769), (51, 427113), (81, 268923), (153, 142371), (243, 89641), (459, 47457), (1377, 15819), (4131, 5273)]