19990245

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{1249}}^1$

素因数の和:1365

約数の個数: 32

約数和(自身を含む): 35280000

約数和(自身を除く): 15289755

約数列:

[1, 3, 5, 11, 15, 33, 55, 97, 165, 291, 485, 1067, 1249, 1455, 3201, 3747, 5335, 6245, 13739, 16005, 18735, 41217, 68695, 121153, 206085, 363459, 605765, 1332683, 1817295, 3998049, 6663415, 19990245]

約数ペア:

[(1, 19990245), (3, 6663415), (5, 3998049), (11, 1817295), (15, 1332683), (33, 605765), (55, 363459), (97, 206085), (165, 121153), (291, 68695), (485, 41217), (1067, 18735), (1249, 16005), (1455, 13739), (3201, 6245), (3747, 5335)]