64851921

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{42139}}^1$

素因数の和:42170

約数の個数: 20

約数和(自身を含む): 101978800

約数和(自身を除く): 37126879

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 42139, 126417, 379251, 800641, 1137753, 2401923, 3413259, 7205769, 21617307, 64851921]

約数ペア:

[(1, 64851921), (3, 21617307), (9, 7205769), (19, 3413259), (27, 2401923), (57, 1137753), (81, 800641), (171, 379251), (513, 126417), (1539, 42139)]