21319310

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{19559}}^1$

素因数の和:19675

約数の個数: 16

約数和(自身を含む): 38728800

約数和(自身を除く): 17409490

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 19559, 39118, 97795, 195590, 2131931, 4263862, 10659655, 21319310]

約数ペア:

[(1, 21319310), (2, 10659655), (5, 4263862), (10, 2131931), (109, 195590), (218, 97795), (545, 39118), (1090, 19559)]