179779798

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{80909}}^1$

素因数の和:81023

約数の個数: 16

約数和(自身を含む): 297101520

約数和(自身を除く): 117321722

約数列:

[1, 2, 11, 22, 101, 202, 1111, 2222, 80909, 161818, 889999, 1779998, 8171809, 16343618, 89889899, 179779798]

約数ペア:

[(1, 179779798), (2, 89889899), (11, 16343618), (22, 8171809), (101, 1779998), (202, 889999), (1111, 161818), (2222, 80909)]