21394347

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{61}}^1$

素因数の和:140

約数の個数: 48

約数和(自身を含む): 34560288

約数和(自身を除く): 13165941

約数列:

[1, 3, 13, 17, 23, 39, 51, 61, 69, 183, 221, 299, 391, 529, 663, 793, 897, 1037, 1173, 1403, 1587, 2379, 3111, 4209, 5083, 6877, 8993, 13481, 15249, 18239, 20631, 23851, 26979, 32269, 40443, 54717, 71553, 96807, 116909, 310063, 350727, 419497, 548573, 930189, 1258491, 1645719, 7131449, 21394347]

約数ペア:

[(1, 21394347), (3, 7131449), (13, 1645719), (17, 1258491), (23, 930189), (39, 548573), (51, 419497), (61, 350727), (69, 310063), (183, 116909), (221, 96807), (299, 71553), (391, 54717), (529, 40443), (663, 32269), (793, 26979), (897, 23851), (1037, 20631), (1173, 18239), (1403, 15249), (1587, 13481), (2379, 8993), (3111, 6877), (4209, 5083)]