81780028

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{8893}}^1$

素因数の和:8938

約数の個数: 36

約数和(自身を含む): 165606280

約数和(自身を除く): 83826252

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 121, 209, 242, 418, 484, 836, 2299, 4598, 8893, 9196, 17786, 35572, 97823, 168967, 195646, 337934, 391292, 675868, 1076053, 1858637, 2152106, 3717274, 4304212, 7434548, 20445007, 40890014, 81780028]

約数ペア:

[(1, 81780028), (2, 40890014), (4, 20445007), (11, 7434548), (19, 4304212), (22, 3717274), (38, 2152106), (44, 1858637), (76, 1076053), (121, 675868), (209, 391292), (242, 337934), (418, 195646), (484, 168967), (836, 97823), (2299, 35572), (4598, 17786), (8893, 9196)]