21003219

素因数分解:

$3^6\times {\mathrm{47}}^1\times {\mathrm{613}}^1$

素因数の和:678

約数の個数: 28

約数和(自身を含む): 32212896

約数和(自身を除く): 11209677

約数列:

[1, 3, 9, 27, 47, 81, 141, 243, 423, 613, 729, 1269, 1839, 3807, 5517, 11421, 16551, 28811, 34263, 49653, 86433, 148959, 259299, 446877, 777897, 2333691, 7001073, 21003219]

約数ペア:

[(1, 21003219), (3, 7001073), (9, 2333691), (27, 777897), (47, 446877), (81, 259299), (141, 148959), (243, 86433), (423, 49653), (613, 34263), (729, 28811), (1269, 16551), (1839, 11421), (3807, 5517)]