81869355

素因数分解:

$3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{16691}}^1$

素因数の和:16811

約数の個数: 24

約数和(自身を含む): 143217360

約数和(自身を除く): 61348005

約数列:

[1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635, 4905, 16691, 50073, 83455, 150219, 250365, 751095, 1819319, 5457957, 9096595, 16373871, 27289785, 81869355]

約数ペア:

[(1, 81869355), (3, 27289785), (5, 16373871), (9, 9096595), (15, 5457957), (45, 1819319), (109, 751095), (327, 250365), (545, 150219), (981, 83455), (1635, 50073), (4905, 16691)]