21393951

素因数分解:

$3^1\times {\mathrm{113}}^1\times {\mathrm{223}}^1\times {\mathrm{283}}^1$

素因数の和:622

約数の個数: 16

約数和(自身を含む): 29008896

約数和(自身を除く): 7614945

約数列:

[1, 3, 113, 223, 283, 339, 669, 849, 25199, 31979, 63109, 75597, 95937, 189327, 7131317, 21393951]

約数ペア:

[(1, 21393951), (3, 7131317), (113, 189327), (223, 95937), (283, 75597), (339, 63109), (669, 31979), (849, 25199)]