19702865

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{3331}}^1$

素因数の和:3369

約数の個数: 24

約数和(自身を含む): 29268288

約数和(自身を除く): 9565423

約数列:

[1, 5, 7, 13, 35, 65, 91, 169, 455, 845, 1183, 3331, 5915, 16655, 23317, 43303, 116585, 216515, 303121, 562939, 1515605, 2814695, 3940573, 19702865]

約数ペア:

[(1, 19702865), (5, 3940573), (7, 2814695), (13, 1515605), (35, 562939), (65, 303121), (91, 216515), (169, 116585), (455, 43303), (845, 23317), (1183, 16655), (3331, 5915)]