21700917

素因数分解:

$3^2\times 7^1\times {\mathrm{401}}^1\times {\mathrm{859}}^1$

素因数の和:1273

約数の個数: 24

約数和(自身を含む): 35954880

約数和(自身を除く): 14253963

約数列:

[1, 3, 7, 9, 21, 63, 401, 859, 1203, 2577, 2807, 3609, 6013, 7731, 8421, 18039, 25263, 54117, 344459, 1033377, 2411213, 3100131, 7233639, 21700917]

約数ペア:

[(1, 21700917), (3, 7233639), (7, 3100131), (9, 2411213), (21, 1033377), (63, 344459), (401, 54117), (859, 25263), (1203, 18039), (2577, 8421), (2807, 7731), (3609, 6013)]