213921

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:170

約数の個数: 20

約数和(自身を含む): 338800

約数和(自身を除く): 124879

約数列:

[1, 3, 9, 19, 27, 57, 81, 139, 171, 417, 513, 1251, 1539, 2641, 3753, 7923, 11259, 23769, 71307, 213921]

約数ペア:

[(1, 213921), (3, 71307), (9, 23769), (19, 11259), (27, 7923), (57, 3753), (81, 2641), (139, 1539), (171, 1251), (417, 513)]