199891881

素因数分解:

$3^4\times 7^1\times {\mathrm{352543}}^1$

素因数の和:352562

約数の個数: 20

約数和(自身を含む): 341262592

約数和(自身を除く): 141370711

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 352543, 1057629, 2467801, 3172887, 7403403, 9518661, 22210209, 28555983, 66630627, 199891881]

約数ペア:

[(1, 199891881), (3, 66630627), (7, 28555983), (9, 22210209), (21, 9518661), (27, 7403403), (63, 3172887), (81, 2467801), (189, 1057629), (567, 352543)]