81691615

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1\times {\mathrm{929}}^1$

素因数の和:1386

約数の個数: 16

約数和(自身を含む): 100663200

約数和(自身を除く): 18971585

約数列:

[1, 5, 43, 215, 409, 929, 2045, 4645, 17587, 39947, 87935, 199735, 379961, 1899805, 16338323, 81691615]

約数ペア:

[(1, 81691615), (5, 16338323), (43, 1899805), (215, 379961), (409, 199735), (929, 87935), (2045, 39947), (4645, 17587)]