81380745

素因数分解:

$3^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{4649}}^1$

素因数の和:5049

約数の個数: 24

約数和(自身を含む): 141453000

約数和(自身を除く): 60072255

約数列:

[1, 3, 5, 9, 15, 45, 389, 1167, 1945, 3501, 4649, 5835, 13947, 17505, 23245, 41841, 69735, 209205, 1808461, 5425383, 9042305, 16276149, 27126915, 81380745]

約数ペア:

[(1, 81380745), (3, 27126915), (5, 16276149), (9, 9042305), (15, 5425383), (45, 1808461), (389, 209205), (1167, 69735), (1945, 41841), (3501, 23245), (4649, 17505), (5835, 13947)]