77866220

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{19763}}^1$

素因数の和:19969

約数の個数: 24

約数和(自身を含む): 164357424

約数和(自身を除く): 86491204

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 19763, 39526, 79052, 98815, 197630, 395260, 3893311, 7786622, 15573244, 19466555, 38933110, 77866220]

約数ペア:

[(1, 77866220), (2, 38933110), (4, 19466555), (5, 15573244), (10, 7786622), (20, 3893311), (197, 395260), (394, 197630), (788, 98815), (985, 79052), (1970, 39526), (3940, 19763)]