219978

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^2\times {\mathrm{101}}^1$

素因数の和:131

約数の個数: 36

約数和(自身を含む): 529074

約数和(自身を除く): 309096

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 101, 121, 198, 202, 242, 303, 363, 606, 726, 909, 1089, 1111, 1818, 2178, 2222, 3333, 6666, 9999, 12221, 19998, 24442, 36663, 73326, 109989, 219978]

約数ペア:

[(1, 219978), (2, 109989), (3, 73326), (6, 36663), (9, 24442), (11, 19998), (18, 12221), (22, 9999), (33, 6666), (66, 3333), (99, 2222), (101, 2178), (121, 1818), (198, 1111), (202, 1089), (242, 909), (303, 726), (363, 606)]