81627651

素因数分解:

$3^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{17749}}^1$

素因数の和:17835

約数の個数: 24

約数和(自身を含む): 136604000

約数和(自身を除く): 54976349

約数列:

[1, 3, 7, 9, 21, 63, 73, 219, 511, 657, 1533, 4599, 17749, 53247, 124243, 159741, 372729, 1118187, 1295677, 3887031, 9069739, 11661093, 27209217, 81627651]

約数ペア:

[(1, 81627651), (3, 27209217), (7, 11661093), (9, 9069739), (21, 3887031), (63, 1295677), (73, 1118187), (219, 372729), (511, 159741), (657, 124243), (1533, 53247), (4599, 17749)]