25581997

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1\times {\mathrm{331}}^1$

素因数の和:580

約数の個数: 16

約数和(自身を含む): 29970304

約数和(自身を除く): 4388307

約数列:

[1, 7, 61, 181, 331, 427, 1267, 2317, 11041, 20191, 59911, 77287, 141337, 419377, 3654571, 25581997]

約数ペア:

[(1, 25581997), (7, 3654571), (61, 419377), (181, 141337), (331, 77287), (427, 59911), (1267, 20191), (2317, 11041)]