19417489

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:209

約数の個数: 32

約数和(自身を含む): 25195520

約数和(自身を除く): 5778031

約数列:

[1, 7, 13, 37, 73, 79, 91, 259, 481, 511, 553, 949, 1027, 2701, 2923, 3367, 5767, 6643, 7189, 18907, 20461, 35113, 37999, 40369, 74971, 213379, 245791, 265993, 524797, 1493653, 2773927, 19417489]

約数ペア:

[(1, 19417489), (7, 2773927), (13, 1493653), (37, 524797), (73, 265993), (79, 245791), (91, 213379), (259, 74971), (481, 40369), (511, 37999), (553, 35113), (949, 20461), (1027, 18907), (2701, 7189), (2923, 6643), (3367, 5767)]