19172881

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{853}}^1$

素因数の和:905

約数の個数: 24

約数和(自身を含む): 25005120

約数和(自身を除く): 5832239

約数列:

[1, 7, 13, 19, 91, 133, 169, 247, 853, 1183, 1729, 3211, 5971, 11089, 16207, 22477, 77623, 113449, 144157, 210691, 1009099, 1474837, 2738983, 19172881]

約数ペア:

[(1, 19172881), (7, 2738983), (13, 1474837), (19, 1009099), (91, 210691), (133, 144157), (169, 113449), (247, 77623), (853, 22477), (1183, 16207), (1729, 11089), (3211, 5971)]