19921881

素因数分解:

$3^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{2297}}^1$

素因数の和:2373

約数の個数: 24

約数和(自身を含む): 31436640

約数和(自身を除く): 11514759

約数列:

[1, 3, 7, 21, 49, 59, 147, 177, 413, 1239, 2297, 2891, 6891, 8673, 16079, 48237, 112553, 135523, 337659, 406569, 948661, 2845983, 6640627, 19921881]

約数ペア:

[(1, 19921881), (3, 6640627), (7, 2845983), (21, 948661), (49, 406569), (59, 337659), (147, 135523), (177, 112553), (413, 48237), (1239, 16079), (2297, 8673), (2891, 6891)]