21281916

素因数分解:

$2^2\times 3^1\times {\mathrm{523}}^1\times {\mathrm{3391}}^1$

素因数の和:3921

約数の個数: 24

約数和(自身を含む): 49767424

約数和(自身を除く): 28485508

約数列:

[1, 2, 3, 4, 6, 12, 523, 1046, 1569, 2092, 3138, 3391, 6276, 6782, 10173, 13564, 20346, 40692, 1773493, 3546986, 5320479, 7093972, 10640958, 21281916]

約数ペア:

[(1, 21281916), (2, 10640958), (3, 7093972), (4, 5320479), (6, 3546986), (12, 1773493), (523, 40692), (1046, 20346), (1569, 13564), (2092, 10173), (3138, 6782), (3391, 6276)]