21290948

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{14347}}^1$

素因数の和:14411

約数の個数: 24

約数和(自身を含む): 43388352

約数和(自身を除く): 22097404

約数列:

[1, 2, 4, 7, 14, 28, 53, 106, 212, 371, 742, 1484, 14347, 28694, 57388, 100429, 200858, 401716, 760391, 1520782, 3041564, 5322737, 10645474, 21290948]

約数ペア:

[(1, 21290948), (2, 10645474), (4, 5322737), (7, 3041564), (14, 1520782), (28, 760391), (53, 401716), (106, 200858), (212, 100429), (371, 57388), (742, 28694), (1484, 14347)]