21318847

素因数分解:

${\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1\times {\mathrm{191}}^1$

素因数の和:414

約数の個数: 16

約数和(自身を含む): 23869440

約数和(自身を除く): 2550593

約数列:

[1, 11, 73, 139, 191, 803, 1529, 2101, 10147, 13943, 26549, 111617, 153373, 292039, 1938077, 21318847]

約数ペア:

[(1, 21318847), (11, 1938077), (73, 292039), (139, 153373), (191, 111617), (803, 26549), (1529, 13943), (2101, 10147)]