19528371

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{12689}}^1$

素因数の和:12720

約数の個数: 20

約数和(自身を含む): 30709800

約数和(自身を除く): 11181429

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 12689, 38067, 114201, 241091, 342603, 723273, 1027809, 2169819, 6509457, 19528371]

約数ペア:

[(1, 19528371), (3, 6509457), (9, 2169819), (19, 1027809), (27, 723273), (57, 342603), (81, 241091), (171, 114201), (513, 38067), (1539, 12689)]