18784765

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{2131}}^1$

素因数の和:2220

約数の個数: 16

約数和(自身を含む): 23639616

約数和(自身を除く): 4854851

約数列:

[1, 5, 41, 43, 205, 215, 1763, 2131, 8815, 10655, 87371, 91633, 436855, 458165, 3756953, 18784765]

約数ペア:

[(1, 18784765), (5, 3756953), (41, 458165), (43, 436855), (205, 91633), (215, 87371), (1763, 10655), (2131, 8815)]