19707219

素因数分解:

$3^4\times 7^1\times {\mathrm{34757}}^1$

素因数の和:34776

約数の個数: 20

約数和(自身を含む): 33645744

約数和(自身を除く): 13938525

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 34757, 104271, 243299, 312813, 729897, 938439, 2189691, 2815317, 6569073, 19707219]

約数ペア:

[(1, 19707219), (3, 6569073), (7, 2815317), (9, 2189691), (21, 938439), (27, 729897), (63, 312813), (81, 243299), (189, 104271), (567, 34757)]