16391403

素因数分解:

$3^4\times 7^1\times {\mathrm{28909}}^1$

素因数の和:28928

約数の個数: 20

約数和(自身を含む): 27984880

約数和(自身を除く): 11593477

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 28909, 86727, 202363, 260181, 607089, 780543, 1821267, 2341629, 5463801, 16391403]

約数ペア:

[(1, 16391403), (3, 5463801), (7, 2341629), (9, 1821267), (21, 780543), (27, 607089), (63, 260181), (81, 202363), (189, 86727), (567, 28909)]