81401855

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{2143}}^1$

素因数の和:2326

約数の個数: 16

約数和(自身を含む): 100030464

約数和(自身を除く): 18628609

約数列:

[1, 5, 71, 107, 355, 535, 2143, 7597, 10715, 37985, 152153, 229301, 760765, 1146505, 16280371, 81401855]

約数ペア:

[(1, 81401855), (5, 16280371), (71, 1146505), (107, 760765), (355, 229301), (535, 152153), (2143, 37985), (7597, 10715)]