19985259

素因数分解:

$3^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{8731}}^1$

素因数の和:8850

約数の個数: 16

約数和(自身を含む): 30736640

約数和(自身を除く): 10751381

約数列:

[1, 3, 7, 21, 109, 327, 763, 2289, 8731, 26193, 61117, 183351, 951679, 2855037, 6661753, 19985259]

約数ペア:

[(1, 19985259), (3, 6661753), (7, 2855037), (21, 951679), (109, 183351), (327, 61117), (763, 26193), (2289, 8731)]