20813806

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{18617}}^1$

素因数の和:18675

約数の個数: 16

約数和(自身を含む): 34406064

約数和(自身を除く): 13592258

約数列:

[1, 2, 13, 26, 43, 86, 559, 1118, 18617, 37234, 242021, 484042, 800531, 1601062, 10406903, 20813806]

約数ペア:

[(1, 20813806), (2, 10406903), (13, 1601062), (26, 800531), (43, 484042), (86, 242021), (559, 37234), (1118, 18617)]