19170221

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{349}}^1$

素因数の和:441

約数の個数: 24

約数和(自身を含む): 23940000

約数和(自身を除く): 4769779

約数列:

[1, 7, 19, 49, 59, 133, 349, 413, 931, 1121, 2443, 2891, 6631, 7847, 17101, 20591, 46417, 54929, 144137, 324919, 391229, 1008959, 2738603, 19170221]

約数ペア:

[(1, 19170221), (7, 2738603), (19, 1008959), (49, 391229), (59, 324919), (133, 144137), (349, 54929), (413, 46417), (931, 20591), (1121, 17101), (2443, 7847), (2891, 6631)]