19800235

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43517}}^1$

素因数の和:43542

約数の個数: 16

約数和(自身を含む): 29244096

約数和(自身を除く): 9443861

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 43517, 217585, 304619, 565721, 1523095, 2828605, 3960047, 19800235]

約数ペア:

[(1, 19800235), (5, 3960047), (7, 2828605), (13, 1523095), (35, 565721), (65, 304619), (91, 217585), (455, 43517)]