81213741

素因数分解:

$3^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{17659}}^1$

素因数の和:17745

約数の個数: 24

約数和(自身を含む): 135911360

約数和(自身を除く): 54697619

約数列:

[1, 3, 7, 9, 21, 63, 73, 219, 511, 657, 1533, 4599, 17659, 52977, 123613, 158931, 370839, 1112517, 1289107, 3867321, 9023749, 11601963, 27071247, 81213741]

約数ペア:

[(1, 81213741), (3, 27071247), (7, 11601963), (9, 9023749), (21, 3867321), (63, 1289107), (73, 1112517), (219, 370839), (511, 158931), (657, 123613), (1533, 52977), (4599, 17659)]